via http://emu-russia.net/en/

Nintendo GameBoy/GameBoy Color emulator for Android has been updated. Changes:
- Added a tool that lets you hunt for new GameShark cheats.
- Select "Cheats | Cheat Hunter | Add Watch" and enter value to search for.
- Play a little bit, until the value changes.
- Select "Cheats | Cheat Hunter | Scan for Changes" to search for changed locations.
- Repeat last two steps a few times.
- Select "Cheats | Cheat Hunter | Create Cheats" to create cheats.
- To edit cheats, use "Cheats | Edit Cheats".
News source: https://play.google.com