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

NES emulator for Android has been updated. Changes:
- Added decorative background in portrait mode.
- Added COIN button to insert "coins" into VS System.
- Added DISK button to flip Famicom DiskSystem disks.
- Now resetting FDS to side A on startup.
- Fixed scanline effects in Debugger, etc.
- Made a work-around for external SD card use on Kitkat!
- If can't write to external SD card, saving states to /sdcard/iNES or to the app-specific SD card folder.
- Removed the MENU button from the screen.
- Fixed sections navigation in the File Selector.
News source: https://play.google.com