FREE version only supports up to android 10. PRO version supports higher android.
https://play.google.com/store/apps/details?id=com.supergbc.pro

HOW TO RESTORE saved states of FREE version to PRO:
Please use X-plore File Manager go to the directory of FREE version: /Android/data/com.supergbc.free/ then copy its contents to the directory of PRO version: /Android /data/com.supergbc.pro/

- A GBC game file (ROM file) is necessary to play a game.
- Copy your own GBC game files to SD card or Internal Memory. (e.g. /sdcard/GBC/)
- Please search games again after copy new GBC game files.
- Support GB/GBC file (.gb .gbc .zip).
- Support Rewind (Your character will never die when this feature is enabled).

LEGAL: This product is not affiliated with or endorsed by Nintendo in any way.