via http://www.aep-emu.de/

Marat Fayzullin has ported his (free) ColecoVision emulator ColEm to the Android platform: ColEm for Android

Quote:
New in 2.6.10:
  • Fixed Native/Java communications during display updates.
  • Made display updates faster and smoother.
  • Fixed SEARCH button to continue working after screen rotation.
  • Made fast-forwarding even faster.