- Loading user, channel, and message information via the internet
- Caching information in a database
- Searching among users, topics, and channels
- List of users with detailed view option
- List of channels and topics
- Creating new channels
- Loading messages in batches of 20
- Editing the text of recently sent messages
- Sending messages to existing or new topics
- Changing the topic of recent messages
- Copying message text
- Deleting recently sent messages from the chat
- Sending and deleting emojis
- Sending and viewing images
- Supporting Russian and English languages
- Supporting light and dark themes
- Layout: XML, CustomView, RecyclerView
- Navigation: Cicerone
- Asynchronous operations: Coroutines
- Networking: Retrofit + OkHttp, Picasso
- Database: Room
- Architecture: TEA
- Dependency Injection: Dagger
- Testing: Kotest, Kaspresso, Wiremock
