I will for sure implement new features and rework the current ones if needed. Let me know what you're thinking about.

This is the state of the app right now:

- You need a Blockonomics API key (https://www.blockonomics.co -> register & login -> wallet watcher ->  settings -> API Key).
- You add the API key and then can add your Bitcoin addresses (up to 100 due to Blockonomics API limitations).
- The app refreshes the balance everytime you open it OR manually click the refresh icon.
- Long press an address card to delete it.
- I also added dark more to the app, since dark mode is life.

Limitations:

- I most likely won't be able to add a way of constantly tracking the addresses' balance and send a a notification every time it changes (that would require a backend to keep track of the changes and push the notifications).

Privacy:

- I do not have access to anything from the user. Zero data. The app saves all the data in the phone's local storage and only pings Blockonomics API for the balance. Simple as that.

Possible features/ideas:

- A way of seeing the address' transactions
- A big card that shows the total balance of all addresses.

Some screenshots:


Now, I only need to add a cool icon, splash screen and send it to Google.