diff --git a/app/src/main/java/io/heckel/ntfy/add/AddTopicActivity.kt b/app/src/main/java/io/heckel/ntfy/add/AddTopicActivity.kt
index 5858773..9dfdcb4 100644
--- a/app/src/main/java/io/heckel/ntfy/add/AddTopicActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/add/AddTopicActivity.kt
@@ -24,38 +24,38 @@ import androidx.appcompat.app.AppCompatActivity
 import com.heckel.ntfy.R
 import com.google.android.material.textfield.TextInputEditText
 
-const val FLOWER_NAME = "name"
-const val FLOWER_DESCRIPTION = "description"
+const val TOPIC_NAME = "name"
+const val TOPIC_DESCRIPTION = "description"
 
 class AddTopicActivity : AppCompatActivity() {
-    private lateinit var addFlowerName: TextInputEditText
-    private lateinit var addFlowerDescription: TextInputEditText
+    private lateinit var addTopicName: TextInputEditText
+    private lateinit var addTopicDescription: TextInputEditText
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.add_flower_layout)
+        setContentView(R.layout.add_topic_layout)
 
         findViewById<Button>(R.id.done_button).setOnClickListener {
-            addFlower()
+            addTopic()
         }
-        addFlowerName = findViewById(R.id.add_flower_name)
-        addFlowerDescription = findViewById(R.id.add_flower_description)
+        addTopicName = findViewById(R.id.add_topic_name)
+        addTopicDescription = findViewById(R.id.add_topic_description)
     }
 
-    /* The onClick action for the done button. Closes the activity and returns the new flower name
+    /* The onClick action for the done button. Closes the activity and returns the new topic name
     and description as part of the intent. If the name or description are missing, the result is set
     to cancelled. */
 
-    private fun addFlower() {
+    private fun addTopic() {
         val resultIntent = Intent()
 
-        if (addFlowerName.text.isNullOrEmpty() || addFlowerDescription.text.isNullOrEmpty()) {
+        if (addTopicName.text.isNullOrEmpty() || addTopicDescription.text.isNullOrEmpty()) {
             setResult(Activity.RESULT_CANCELED, resultIntent)
         } else {
-            val name = addFlowerName.text.toString()
-            val description = addFlowerDescription.text.toString()
-            resultIntent.putExtra(FLOWER_NAME, name)
-            resultIntent.putExtra(FLOWER_DESCRIPTION, description)
+            val name = addTopicName.text.toString()
+            val description = addTopicDescription.text.toString()
+            resultIntent.putExtra(TOPIC_NAME, name)
+            resultIntent.putExtra(TOPIC_DESCRIPTION, description)
             setResult(Activity.RESULT_OK, resultIntent)
         }
         finish()
diff --git a/app/src/main/java/io/heckel/ntfy/data/DataSource.kt b/app/src/main/java/io/heckel/ntfy/data/DataSource.kt
index d26bb51..f21cac0 100644
--- a/app/src/main/java/io/heckel/ntfy/data/DataSource.kt
+++ b/app/src/main/java/io/heckel/ntfy/data/DataSource.kt
@@ -20,49 +20,43 @@ import android.content.res.Resources
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 
-/* Handles operations on flowersLiveData and holds details about it. */
+/* Handles operations on topicsLiveData and holds details about it. */
 class DataSource(resources: Resources) {
-    private val initialFlowerList = flowerList(resources)
-    private val flowersLiveData = MutableLiveData(initialFlowerList)
+    private val initialTopicList = topicList(resources)
+    private val topicsLiveData = MutableLiveData(initialTopicList)
 
-    /* Adds flower to liveData and posts value. */
-    fun addFlower(flower: Topic) {
-        val currentList = flowersLiveData.value
+    /* Adds topic to liveData and posts value. */
+    fun addTopic(topic: Topic) {
+        val currentList = topicsLiveData.value
         if (currentList == null) {
-            flowersLiveData.postValue(listOf(flower))
+            topicsLiveData.postValue(listOf(topic))
         } else {
             val updatedList = currentList.toMutableList()
-            updatedList.add(0, flower)
-            flowersLiveData.postValue(updatedList)
+            updatedList.add(0, topic)
+            topicsLiveData.postValue(updatedList)
         }
     }
 
-    /* Removes flower from liveData and posts value. */
-    fun removeFlower(flower: Topic) {
-        val currentList = flowersLiveData.value
+    /* Removes topic from liveData and posts value. */
+    fun removeTopic(topic: Topic) {
+        val currentList = topicsLiveData.value
         if (currentList != null) {
             val updatedList = currentList.toMutableList()
-            updatedList.remove(flower)
-            flowersLiveData.postValue(updatedList)
+            updatedList.remove(topic)
+            topicsLiveData.postValue(updatedList)
         }
     }
 
-    /* Returns flower given an ID. */
-    fun getFlowerForId(id: Long): Topic? {
-        flowersLiveData.value?.let { flowers ->
-            return flowers.firstOrNull{ it.id == id}
+    /* Returns topic given an ID. */
+    fun getTopicForId(id: Long): Topic? {
+        topicsLiveData.value?.let { topics ->
+            return topics.firstOrNull{ it.id == id}
         }
         return null
     }
 
-    fun getFlowerList(): LiveData<List<Topic>> {
-        return flowersLiveData
-    }
-
-    /* Returns a random flower asset for flowers that are added. */
-    fun getRandomFlowerImageAsset(): Int? {
-        val randomNumber = (initialFlowerList.indices).random()
-        return initialFlowerList[randomNumber].image
+    fun getTopicList(): LiveData<List<Topic>> {
+        return topicsLiveData
     }
 
     companion object {
diff --git a/app/src/main/java/io/heckel/ntfy/data/Topic.kt b/app/src/main/java/io/heckel/ntfy/data/Topic.kt
index 9cdbb2f..5d85ef4 100644
--- a/app/src/main/java/io/heckel/ntfy/data/Topic.kt
+++ b/app/src/main/java/io/heckel/ntfy/data/Topic.kt
@@ -20,8 +20,6 @@ import androidx.annotation.DrawableRes
 
 data class Topic(
     val id: Long,
-    val name: String,
-    @DrawableRes
-    val image: Int?,
+    val url: String,
     val description: String
 )
diff --git a/app/src/main/java/io/heckel/ntfy/data/Topics.kt b/app/src/main/java/io/heckel/ntfy/data/Topics.kt
index 9cc3bf5..0ed6666 100644
--- a/app/src/main/java/io/heckel/ntfy/data/Topics.kt
+++ b/app/src/main/java/io/heckel/ntfy/data/Topics.kt
@@ -19,74 +19,18 @@ package io.heckel.ntfy.data
 import android.content.res.Resources
 import com.heckel.ntfy.R
 
-/* Returns initial list of flowers. */
-fun flowerList(resources: Resources): List<Topic> {
+/* Returns initial list of topics. */
+fun topicList(resources: Resources): List<Topic> {
     return listOf(
         Topic(
             id = 1,
-            name = resources.getString(R.string.flower1_name),
-            image = R.drawable.rose,
-            description = resources.getString(R.string.flower1_description)
+            url = resources.getString(R.string.topic1_name),
+            description = resources.getString(R.string.topic1_description)
         ),
         Topic(
             id = 2,
-            name = resources.getString(R.string.flower2_name),
-            image = R.drawable.freesia,
-            description = resources.getString(R.string.flower2_description)
+            url = resources.getString(R.string.topic2_name),
+            description = resources.getString(R.string.topic2_description)
         ),
-        Topic(
-            id = 3,
-            name = resources.getString(R.string.flower3_name),
-            image = R.drawable.lily,
-            description = resources.getString(R.string.flower3_description)
-        ),
-        Topic(
-            id = 4,
-            name = resources.getString(R.string.flower4_name),
-            image = R.drawable.sunflower,
-            description = resources.getString(R.string.flower4_description)
-        ),
-        Topic(
-            id = 5,
-            name = resources.getString(R.string.flower5_name),
-            image = R.drawable.peony,
-            description = resources.getString(R.string.flower5_description)
-        ),
-        Topic(
-            id = 6,
-            name = resources.getString(R.string.flower6_name),
-            image = R.drawable.daisy,
-            description = resources.getString(R.string.flower6_description)
-        ),
-        Topic(
-            id = 7,
-            name = resources.getString(R.string.flower7_name),
-            image = R.drawable.lilac,
-            description = resources.getString(R.string.flower7_description)
-        ),
-        Topic(
-            id = 8,
-            name = resources.getString(R.string.flower8_name),
-            image = R.drawable.marigold,
-            description = resources.getString(R.string.flower8_description)
-        ),
-        Topic(
-            id = 9,
-            name = resources.getString(R.string.flower9_name),
-            image = R.drawable.poppy,
-            description = resources.getString(R.string.flower9_description)
-        ),
-        Topic(
-            id = 10,
-            name = resources.getString(R.string.flower10_name),
-            image = R.drawable.daffodil,
-            description = resources.getString(R.string.flower10_description)
-        ),
-        Topic(
-            id = 11,
-            name = resources.getString(R.string.flower11_name),
-            image = R.drawable.dahlia,
-            description = resources.getString(R.string.flower11_description)
-        )
     )
 }
diff --git a/app/src/main/java/io/heckel/ntfy/detail/TopicDetailActivity.kt b/app/src/main/java/io/heckel/ntfy/detail/TopicDetailActivity.kt
index aec951b..4cee241 100644
--- a/app/src/main/java/io/heckel/ntfy/detail/TopicDetailActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/detail/TopicDetailActivity.kt
@@ -23,46 +23,40 @@ import android.widget.TextView
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
 import com.heckel.ntfy.R
-import io.heckel.ntfy.list.FLOWER_ID
+import io.heckel.ntfy.list.TOPIC_ID
 
 class TopicDetailActivity : AppCompatActivity() {
 
-    private val flowerDetailViewModel by viewModels<FlowerDetailViewModel> {
-        FlowerDetailViewModelFactory(this)
+    private val topicDetailViewModel by viewModels<TopicDetailViewModel> {
+        TopicDetailViewModelFactory(this)
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.flower_detail_activity)
+        setContentView(R.layout.topic_detail_activity)
 
-        var currentFlowerId: Long? = null
+        var currentTopicId: Long? = null
 
         /* Connect variables to UI elements. */
-        val flowerName: TextView = findViewById(R.id.flower_detail_name)
-        val flowerImage: ImageView = findViewById(R.id.flower_detail_image)
-        val flowerDescription: TextView = findViewById(R.id.flower_detail_description)
-        val removeFlowerButton: Button = findViewById(R.id.remove_button)
+        val topicName: TextView = findViewById(R.id.topic_detail_name)
+        val topicDescription: TextView = findViewById(R.id.topic_detail_url)
+        val removeTopicButton: Button = findViewById(R.id.remove_button)
 
         val bundle: Bundle? = intent.extras
         if (bundle != null) {
-            currentFlowerId = bundle.getLong(FLOWER_ID)
+            currentTopicId = bundle.getLong(TOPIC_ID)
         }
 
-        /* If currentFlowerId is not null, get corresponding flower and set name, image and
+        /* If currentTopicId is not null, get corresponding topic and set name, image and
         description */
-        currentFlowerId?.let {
-            val currentFlower = flowerDetailViewModel.getFlowerForId(it)
-            flowerName.text = currentFlower?.name
-            if (currentFlower?.image == null) {
-                flowerImage.setImageResource(R.drawable.rose)
-            } else {
-                flowerImage.setImageResource(currentFlower.image)
-            }
-            flowerDescription.text = currentFlower?.description
+        currentTopicId?.let {
+            val currentTopic = topicDetailViewModel.getTopicForId(it)
+            topicName.text = currentTopic?.url
+            topicDescription.text = currentTopic?.description
 
-            removeFlowerButton.setOnClickListener {
-                if (currentFlower != null) {
-                    flowerDetailViewModel.removeFlower(currentFlower)
+            removeTopicButton.setOnClickListener {
+                if (currentTopic != null) {
+                    topicDetailViewModel.removeTopic(currentTopic)
                 }
                 finish()
             }
diff --git a/app/src/main/java/io/heckel/ntfy/detail/TopicDetailViewModel.kt b/app/src/main/java/io/heckel/ntfy/detail/TopicDetailViewModel.kt
index b80d3ba..e544477 100644
--- a/app/src/main/java/io/heckel/ntfy/detail/TopicDetailViewModel.kt
+++ b/app/src/main/java/io/heckel/ntfy/detail/TopicDetailViewModel.kt
@@ -22,25 +22,25 @@ import androidx.lifecycle.ViewModelProvider
 import io.heckel.ntfy.data.DataSource
 import io.heckel.ntfy.data.Topic
 
-class FlowerDetailViewModel(private val datasource: DataSource) : ViewModel() {
+class TopicDetailViewModel(private val datasource: DataSource) : ViewModel() {
 
-    /* Queries datasource to returns a flower that corresponds to an id. */
-    fun getFlowerForId(id: Long) : Topic? {
-        return datasource.getFlowerForId(id)
+    /* Queries datasource to returns a topic that corresponds to an id. */
+    fun getTopicForId(id: Long) : Topic? {
+        return datasource.getTopicForId(id)
     }
 
-    /* Queries datasource to remove a flower. */
-    fun removeFlower(flower: Topic) {
-        datasource.removeFlower(flower)
+    /* Queries datasource to remove a topic. */
+    fun removeTopic(topic: Topic) {
+        datasource.removeTopic(topic)
     }
 }
 
-class FlowerDetailViewModelFactory(private val context: Context) : ViewModelProvider.Factory {
+class TopicDetailViewModelFactory(private val context: Context) : ViewModelProvider.Factory {
 
     override fun <T : ViewModel> create(modelClass: Class<T>): T {
-        if (modelClass.isAssignableFrom(FlowerDetailViewModel::class.java)) {
+        if (modelClass.isAssignableFrom(TopicDetailViewModel::class.java)) {
             @Suppress("UNCHECKED_CAST")
-            return FlowerDetailViewModel(
+            return TopicDetailViewModel(
                 datasource = DataSource.getDataSource(context.resources)
             ) as T
         }
diff --git a/app/src/main/java/io/heckel/ntfy/list/HeaderAdapter.kt b/app/src/main/java/io/heckel/ntfy/list/HeaderAdapter.kt
deleted file mode 100644
index ad508d3..0000000
--- a/app/src/main/java/io/heckel/ntfy/list/HeaderAdapter.kt
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.heckel.ntfy.list
-
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.widget.TextView
-import androidx.recyclerview.widget.RecyclerView
-import com.heckel.ntfy.R
-
-/* A list always displaying one element: the number of flowers. */
-
-class HeaderAdapter: RecyclerView.Adapter<HeaderAdapter.HeaderViewHolder>() {
-    private var flowerCount: Int = 0
-
-    /* ViewHolder for displaying header. */
-    class HeaderViewHolder(view: View) : RecyclerView.ViewHolder(view){
-        private val flowerNumberTextView: TextView = itemView.findViewById(R.id.flower_number_text)
-
-        fun bind(flowerCount: Int) {
-            flowerNumberTextView.text = flowerCount.toString()
-        }
-    }
-
-    /* Inflates view and returns HeaderViewHolder. */
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): HeaderViewHolder {
-        val view = LayoutInflater.from(parent.context)
-            .inflate(R.layout.header_item, parent, false)
-        return HeaderViewHolder(view)
-    }
-
-    /* Binds number of flowers to the header. */
-    override fun onBindViewHolder(holder: HeaderViewHolder, position: Int) {
-        holder.bind(flowerCount)
-    }
-
-    /* Returns number of items, since there is only one item in the header return one  */
-    override fun getItemCount(): Int {
-        return 1
-    }
-
-    /* Updates header to display number of flowers when a flower is added or subtracted. */
-    fun updateFlowerCount(updatedFlowerCount: Int) {
-        flowerCount = updatedFlowerCount
-        notifyDataSetChanged()
-    }
-}
diff --git a/app/src/main/java/io/heckel/ntfy/list/TopicsAdapter.kt b/app/src/main/java/io/heckel/ntfy/list/TopicsAdapter.kt
index 16db218..1a3d304 100644
--- a/app/src/main/java/io/heckel/ntfy/list/TopicsAdapter.kt
+++ b/app/src/main/java/io/heckel/ntfy/list/TopicsAdapter.kt
@@ -27,53 +27,46 @@ import androidx.recyclerview.widget.RecyclerView
 import com.heckel.ntfy.R
 import io.heckel.ntfy.data.Topic
 
-class FlowersAdapter(private val onClick: (Topic) -> Unit) :
-    ListAdapter<Topic, FlowersAdapter.FlowerViewHolder>(FlowerDiffCallback) {
+class TopicsAdapter(private val onClick: (Topic) -> Unit) :
+    ListAdapter<Topic, TopicsAdapter.TopicViewHolder>(TopicDiffCallback) {
 
-    /* ViewHolder for Flower, takes in the inflated view and the onClick behavior. */
-    class FlowerViewHolder(itemView: View, val onClick: (Topic) -> Unit) :
+    /* ViewHolder for Topic, takes in the inflated view and the onClick behavior. */
+    class TopicViewHolder(itemView: View, val onClick: (Topic) -> Unit) :
         RecyclerView.ViewHolder(itemView) {
-        private val flowerTextView: TextView = itemView.findViewById(R.id.flower_text)
-        private val flowerImageView: ImageView = itemView.findViewById(R.id.flower_image)
-        private var currentFlower: Topic? = null
+        private val topicTextView: TextView = itemView.findViewById(R.id.topic_text)
+        private var currentTopic: Topic? = null
 
         init {
             itemView.setOnClickListener {
-                currentFlower?.let {
+                currentTopic?.let {
                     onClick(it)
                 }
             }
         }
 
-        /* Bind flower name and image. */
-        fun bind(flower: Topic) {
-            currentFlower = flower
-
-            flowerTextView.text = flower.name
-            if (flower.image != null) {
-                flowerImageView.setImageResource(flower.image)
-            } else {
-                flowerImageView.setImageResource(R.drawable.rose)
-            }
+        /* Bind topic name and image. */
+        fun bind(topic: Topic) {
+            currentTopic = topic
+            topicTextView.text = topic.url
         }
     }
 
-    /* Creates and inflates view and return FlowerViewHolder. */
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FlowerViewHolder {
+    /* Creates and inflates view and return TopicViewHolder. */
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TopicViewHolder {
         val view = LayoutInflater.from(parent.context)
-            .inflate(R.layout.flower_item, parent, false)
-        return FlowerViewHolder(view, onClick)
+            .inflate(R.layout.topic_item, parent, false)
+        return TopicViewHolder(view, onClick)
     }
 
-    /* Gets current flower and uses it to bind view. */
-    override fun onBindViewHolder(holder: FlowerViewHolder, position: Int) {
-        val flower = getItem(position)
-        holder.bind(flower)
+    /* Gets current topic and uses it to bind view. */
+    override fun onBindViewHolder(holder: TopicViewHolder, position: Int) {
+        val topic = getItem(position)
+        holder.bind(topic)
 
     }
 }
 
-object FlowerDiffCallback : DiffUtil.ItemCallback<Topic>() {
+object TopicDiffCallback : DiffUtil.ItemCallback<Topic>() {
     override fun areItemsTheSame(oldItem: Topic, newItem: Topic): Boolean {
         return oldItem == newItem
     }
diff --git a/app/src/main/java/io/heckel/ntfy/list/TopicsListActivity.kt b/app/src/main/java/io/heckel/ntfy/list/TopicsListActivity.kt
index 8e71150..6fe37b0 100644
--- a/app/src/main/java/io/heckel/ntfy/list/TopicsListActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/list/TopicsListActivity.kt
@@ -27,37 +27,31 @@ import androidx.recyclerview.widget.RecyclerView
 import io.heckel.ntfy.add.AddTopicActivity
 import io.heckel.ntfy.detail.TopicDetailActivity
 import com.heckel.ntfy.R
-import io.heckel.ntfy.add.FLOWER_DESCRIPTION
-import io.heckel.ntfy.add.FLOWER_NAME
+import io.heckel.ntfy.add.TOPIC_DESCRIPTION
+import io.heckel.ntfy.add.TOPIC_NAME
 import io.heckel.ntfy.data.Topic
 
-const val FLOWER_ID = "flower id"
+const val TOPIC_ID = "topic id"
 
 class TopicsListActivity : AppCompatActivity() {
     private val newTopicActivityRequestCode = 1
     private val topicsListViewModel by viewModels<TopicsListViewModel> {
-        FlowersListViewModelFactory(this)
+        TopicsListViewModelFactory(this)
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        /* Instantiates headerAdapter and flowersAdapter. Both adapters are added to concatAdapter.
-        which displays the contents sequentially */
-        val headerAdapter = HeaderAdapter()
-        val topicsAdapter = FlowersAdapter { flower -> adapterOnClick(flower) }
-        val concatAdapter = ConcatAdapter(headerAdapter, topicsAdapter)
-
+        val adapter = TopicsAdapter { topic -> adapterOnClick(topic) }
         val recyclerView: RecyclerView = findViewById(R.id.recycler_view)
-        recyclerView.adapter = concatAdapter
+        recyclerView.adapter = adapter
 
-        topicsListViewModel.topicsLiveData.observe(this, {
+        topicsListViewModel.topicsLiveData.observe(this) {
             it?.let {
-                topicsAdapter.submitList(it as MutableList<Topic>)
-                headerAdapter.updateFlowerCount(it.size)
+                adapter.submitList(it as MutableList<Topic>)
             }
-        })
+        }
 
         val fab: View = findViewById(R.id.fab)
         fab.setOnClickListener {
@@ -65,14 +59,14 @@ class TopicsListActivity : AppCompatActivity() {
         }
     }
 
-    /* Opens FlowerDetailActivity when RecyclerView item is clicked. */
-    private fun adapterOnClick(flower: Topic) {
+    /* Opens TopicDetailActivity when RecyclerView item is clicked. */
+    private fun adapterOnClick(topic: Topic) {
         val intent = Intent(this, TopicDetailActivity()::class.java)
-        intent.putExtra(FLOWER_ID, flower.id)
+        intent.putExtra(TOPIC_ID, topic.id)
         startActivity(intent)
     }
 
-    /* Adds flower to flowerList when FAB is clicked. */
+    /* Adds topic to topicList when FAB is clicked. */
     private fun fabOnClick() {
         val intent = Intent(this, AddTopicActivity::class.java)
         startActivityForResult(intent, newTopicActivityRequestCode)
@@ -81,13 +75,13 @@ class TopicsListActivity : AppCompatActivity() {
     override fun onActivityResult(requestCode: Int, resultCode: Int, intentData: Intent?) {
         super.onActivityResult(requestCode, resultCode, intentData)
 
-        /* Inserts flower into viewModel. */
+        /* Inserts topic into viewModel. */
         if (requestCode == newTopicActivityRequestCode && resultCode == Activity.RESULT_OK) {
             intentData?.let { data ->
-                val flowerName = data.getStringExtra(FLOWER_NAME)
-                val flowerDescription = data.getStringExtra(FLOWER_DESCRIPTION)
+                val topicName = data.getStringExtra(TOPIC_NAME)
+                val topicDescription = data.getStringExtra(TOPIC_DESCRIPTION)
 
-                topicsListViewModel.insertFlower(flowerName, flowerDescription)
+                topicsListViewModel.insertTopic(topicName, topicDescription)
             }
         }
     }
diff --git a/app/src/main/java/io/heckel/ntfy/list/TopicsListViewModel.kt b/app/src/main/java/io/heckel/ntfy/list/TopicsListViewModel.kt
index ee43da4..297dbaf 100644
--- a/app/src/main/java/io/heckel/ntfy/list/TopicsListViewModel.kt
+++ b/app/src/main/java/io/heckel/ntfy/list/TopicsListViewModel.kt
@@ -25,27 +25,25 @@ import kotlin.random.Random
 
 class TopicsListViewModel(val dataSource: DataSource) : ViewModel() {
 
-    val topicsLiveData = dataSource.getFlowerList()
+    val topicsLiveData = dataSource.getTopicList()
 
-    /* If the name and description are present, create new Flower and add it to the datasource */
-    fun insertFlower(flowerName: String?, flowerDescription: String?) {
-        if (flowerName == null || flowerDescription == null) {
+    /* If the name and description are present, create new Topic and add it to the datasource */
+    fun insertTopic(topicName: String?, topicDescription: String?) {
+        if (topicName == null || topicDescription == null) {
             return
         }
 
-        val image = dataSource.getRandomFlowerImageAsset()
-        val newFlower = Topic(
+        val newTopic = Topic(
             Random.nextLong(),
-            flowerName,
-            image,
-            flowerDescription
+            topicName,
+            topicDescription
         )
 
-        dataSource.addFlower(newFlower)
+        dataSource.addTopic(newTopic)
     }
 }
 
-class FlowersListViewModelFactory(private val context: Context) : ViewModelProvider.Factory {
+class TopicsListViewModelFactory(private val context: Context) : ViewModelProvider.Factory {
 
     override fun <T : ViewModel> create(modelClass: Class<T>): T {
         if (modelClass.isAssignableFrom(TopicsListViewModel::class.java)) {
diff --git a/app/src/main/res/drawable-v24/daffodil.png b/app/src/main/res/drawable-v24/daffodil.png
deleted file mode 100644
index 6f43e57..0000000
Binary files a/app/src/main/res/drawable-v24/daffodil.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/dahlia.png b/app/src/main/res/drawable-v24/dahlia.png
deleted file mode 100644
index f328ede..0000000
Binary files a/app/src/main/res/drawable-v24/dahlia.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/daisy.png b/app/src/main/res/drawable-v24/daisy.png
deleted file mode 100644
index c3d559a..0000000
Binary files a/app/src/main/res/drawable-v24/daisy.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/freesia.png b/app/src/main/res/drawable-v24/freesia.png
deleted file mode 100644
index 06bf10d..0000000
Binary files a/app/src/main/res/drawable-v24/freesia.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/lilac.png b/app/src/main/res/drawable-v24/lilac.png
deleted file mode 100644
index e2763e6..0000000
Binary files a/app/src/main/res/drawable-v24/lilac.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/lily.png b/app/src/main/res/drawable-v24/lily.png
deleted file mode 100644
index 97b09d1..0000000
Binary files a/app/src/main/res/drawable-v24/lily.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/marigold.png b/app/src/main/res/drawable-v24/marigold.png
deleted file mode 100644
index e7962b5..0000000
Binary files a/app/src/main/res/drawable-v24/marigold.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/peony.png b/app/src/main/res/drawable-v24/peony.png
deleted file mode 100644
index 50c2f7d..0000000
Binary files a/app/src/main/res/drawable-v24/peony.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/poppy.png b/app/src/main/res/drawable-v24/poppy.png
deleted file mode 100644
index 174ec25..0000000
Binary files a/app/src/main/res/drawable-v24/poppy.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/rose.png b/app/src/main/res/drawable-v24/rose.png
deleted file mode 100644
index 82fbf04..0000000
Binary files a/app/src/main/res/drawable-v24/rose.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/sunflower.png b/app/src/main/res/drawable-v24/sunflower.png
deleted file mode 100644
index 7a17330..0000000
Binary files a/app/src/main/res/drawable-v24/sunflower.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v24/tulip.png b/app/src/main/res/drawable-v24/tulip.png
deleted file mode 100644
index d0ce2bf..0000000
Binary files a/app/src/main/res/drawable-v24/tulip.png and /dev/null differ
diff --git a/app/src/main/res/layout/add_flower_layout.xml b/app/src/main/res/layout/add_topic_layout.xml
similarity index 92%
rename from app/src/main/res/layout/add_flower_layout.xml
rename to app/src/main/res/layout/add_topic_layout.xml
index da4b7e8..4f5ef71 100644
--- a/app/src/main/res/layout/add_flower_layout.xml
+++ b/app/src/main/res/layout/add_topic_layout.xml
@@ -33,12 +33,12 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
-        android:hint="@string/flower_name_edit_text"
+        android:hint="@string/topic_name_edit_text"
         android:paddingTop="16dp"
         android:paddingBottom="16dp">
 
         <com.google.android.material.textfield.TextInputEditText
-            android:id="@+id/add_flower_name"
+            android:id="@+id/add_topic_name"
             android:layout_width="match_parent"
             android:layout_height="wrap_content" />
 
@@ -48,12 +48,12 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
-        android:hint="@string/flower_description_edit_text"
+        android:hint="@string/topic_description_edit_text"
         android:paddingTop="16dp"
         android:paddingBottom="16dp">
 
         <com.google.android.material.textfield.TextInputEditText
-            android:id="@+id/add_flower_description"
+            android:id="@+id/add_topic_description"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:inputType="textMultiLine" />
diff --git a/app/src/main/res/layout/flower_item.xml b/app/src/main/res/layout/flower_item.xml
deleted file mode 100644
index d519518..0000000
--- a/app/src/main/res/layout/flower_item.xml
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright (C) 2020 The Android Open Source Project
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-          http://www.apache.org/licenses/LICENSE-2.0
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-    <ImageView
-        android:id="@+id/flower_image"
-        android:layout_width="48dp"
-        android:layout_height="48dp"
-        android:layout_margin="8dp"
-        android:contentDescription="@string/flower_image_content_description"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toStartOf="@+id/flower_text"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
-    <TextView
-        android:id="@+id/flower_text"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_margin="8dp"
-        android:text="@string/flower1_name"
-        android:textAppearance="?attr/textAppearanceHeadline5"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toEndOf="@+id/flower_image"
-        app:layout_constraintTop_toTopOf="parent" />
-
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/header_item.xml b/app/src/main/res/layout/header_item.xml
index 94225c9..1dd470e 100644
--- a/app/src/main/res/layout/header_item.xml
+++ b/app/src/main/res/layout/header_item.xml
@@ -16,29 +16,4 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-    <TextView
-        android:id="@+id/header_text"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
-        android:text="@string/flower_finder"
-        android:textAppearance="?attr/textAppearanceHeadline3" />
-
-    <TextView
-        android:id="@+id/flower_number_text"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
-        android:textAppearance="?attr/textAppearanceHeadline6" />
-
-    <TextView
-        android:id="@+id/flower_text"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
-        android:text="@string/flower_string"
-        android:textAppearance="?attr/textAppearanceHeadline6" />
-
-</LinearLayout>
\ No newline at end of file
+    android:layout_height="wrap_content"/>
diff --git a/app/src/main/res/layout/flower_detail_activity.xml b/app/src/main/res/layout/topic_detail_activity.xml
similarity index 76%
rename from app/src/main/res/layout/flower_detail_activity.xml
rename to app/src/main/res/layout/topic_detail_activity.xml
index e29a70c..be34dbd 100644
--- a/app/src/main/res/layout/flower_detail_activity.xml
+++ b/app/src/main/res/layout/topic_detail_activity.xml
@@ -19,29 +19,21 @@
     android:orientation="vertical">
 
     <TextView
-        android:id="@+id/flower_detail_name"
+        android:id="@+id/topic_detail_name"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingTop="24dp"
         android:paddingBottom="24dp"
-        android:text="@string/flower1_name"
+        android:text="@string/topic1_name"
         android:textAlignment="center"
         android:textAppearance="?attr/textAppearanceHeadline3" />
 
-    <ImageView
-        android:id="@+id/flower_detail_image"
-        android:layout_width="320dp"
-        android:layout_height="320dp"
-        android:layout_gravity="center"
-        android:contentDescription="@string/flower_image_content_description"
-        app:srcCompat="@drawable/rose" />
-
     <TextView
-        android:id="@+id/flower_detail_description"
+        android:id="@+id/topic_detail_url"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:padding="16dp"
-        android:text="@string/flower1_description" />
+        android:text="@string/topic1_description" />
 
     <Button
         android:id="@+id/remove_button"
diff --git a/app/src/main/res/layout/topic_item.xml b/app/src/main/res/layout/topic_item.xml
new file mode 100644
index 0000000..a30d2d9
--- /dev/null
+++ b/app/src/main/res/layout/topic_item.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2020 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+          http://www.apache.org/licenses/LICENSE-2.0
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:app="http://schemas.android.com/apk/res-auto"
+              android:layout_width="match_parent"
+              android:layout_height="80dp"
+              android:orientation="vertical">
+    <TextView
+            android:text="https://ntfy.sh/example"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" android:id="@+id/topic_text"
+            android:layout_marginTop="16dp" android:layout_marginLeft="16dp"
+            android:textAppearance="@style/TextAppearance.AppCompat.Medium"/>
+    <TextView
+            android:text="Subscribed, 0 messages"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" android:id="@+id/topic_status"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small" android:layout_marginLeft="16dp"/>
+</LinearLayout>
+
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 1ca268b..0326510 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -15,47 +15,23 @@
 -->
 
 <resources>
-    <string name="app_name">ntfy.sh</string>
+    <string name="app_name">Ntfy</string>
     <string name="add_topic">Add Topic</string>
 
-    <string name="flower1_name">Rose</string>
-    <string name="flower2_name">Freesia</string>
-    <string name="flower3_name">Lily</string>
-    <string name="flower4_name">Sunflower</string>
-    <string name="flower5_name">Peony</string>
-    <string name="flower6_name">Daisy</string>
-    <string name="flower7_name">Lilac</string>
-    <string name="flower8_name">Marigold</string>
-    <string name="flower9_name">Poppy</string>
-    <string name="flower10_name">Daffodil</string>
-    <string name="flower11_name">Dahlia</string>
-    <string name="flower12_name">Tulip</string>
+    <string name="topic1_name">Rose</string>
+    <string name="topic2_name">Freesia</string>
 
-    <string name="flower1_description">Rose comes from the Latin word Rosa. There are over 100
+    <string name="topic1_description">Rose comes from the Latin word Rosa. There are over 100
         species of the rose. </string>
-    <string name="flower2_description">Freesias bloom during spring and are native to
+    <string name="topic2_description">Freesias bloom during spring and are native to
         Africa.</string>
-    <string name="flower3_description">Lilies have the longest in vase lifespan of any cut
-        bloom.</string>
-    <string name="flower4_description">Mature Sunflowers face east and are native too the United
-        States.</string>
-    <string name="flower5_description">Peony plants can live to be 100 years old.</string>
-    <string name="flower6_description">Daisies are cousins with Sunflowers.</string>
-    <string name="flower7_description">Lilacs belong to the olive family.</string>
-    <string name="flower8_description">Marigolds come in orange, reed, maroon and yellow.</string>
-    <string name="flower9_description">Poppies can be over 3 feet tall.</string>
-    <string name="flower10_description">Daffodils are referred to as Lent Lilies in England</string>
-    <string name="flower11_description">Dahlia is named after the Swedish botanist Anders
-        Dahl</string>
-    <string name="flower12_description">There are over 150 species of tulips.</string>
 
-    <string name="flower_string">Flowers</string>
-    <string name="flower_finder">Flower finder</string>
-    <string name="flower_description_edit_text">Flower Description</string>
-    <string name="flower_name_edit_text">Flower Name</string>
+    <string name="topic_string">Topics</string>
+    <string name="topic_finder">Topic finder</string>
+    <string name="topic_description_edit_text">Topic Description</string>
+    <string name="topic_name_edit_text">Topic Name</string>
     <string name="done_button_text">Done</string>
     <string name="fab_content_description">fab</string>
-    <string name="flower_image_content_description">Image of flower</string>
     <string name="remove_topic">Unsubscribe</string>
 
 </resources>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 059253a..38eac6e 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -16,10 +16,13 @@
 
 <resources>
     <!-- Base application theme. -->
+    <!-- No action bar, https://stackoverflow.com/a/36236700 -->
     <style name="AppTheme" parent="Theme.MaterialComponents.Light.DarkActionBar">
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryVariant">@color/colorPrimaryDark</item>
         <item name="colorSecondary">@color/colorAccent</item>
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+        <!--<item name="android:windowFullscreen">true</item>-->
     </style>
-
 </resources>