Coiny is a beautiful cryptocurrency app, completely open source and 100% in kotlin. It supports following features

• Track prices of over 4000+ currencies over 100+ exchanges
• Get top coins, top pairs, top exchanges by volume.
• Track latest news for all the coins and crypto community in general
• Completely secure, your data never leaves your device.
• Choose your home currency and track prices in it.
• Made with ❤️ and help from opensource community
• Open for contribution, please send a pull request.

App available on Google Play: https://play.google.com/store/apps/details?id=com.binarybricks.coiny

• Ability to add transactions
• Ability to change exchanges
• Autorefresh of prices
• Candle charts

Currently the app is using MVP with a repository. We have 2 data source, Room and in memory cache. Data flow is like this

Fragments/Activities -> Presenter -> Repo -> Network/Cache (room/in memory)

In coming days I would like to remove inmemory cache and make everything come from Room. Network will keep the Room cache updated. This will give app some offline abilities.

I am also using a ton of recycler view with Adapter Delegate Pattern. This enables me to plug and play the screens like Lego blocks. I am thinking to replace this with Epoxy in coming days.