VinaBoy Advance is a Game Boy, Game Boy Color, and Game Boy Advance emulator for android devices.
Pros:
Compatibility seems pretty good and the few games I tested played well.
Cons:
VinaBoy automatically scans for roms but does not read external SD card.
There is a small ad at top but does not show during game play.
There is no way for user to change any settings (no settings menu).
* Quickly find load the ROM inside the app (the format must be in .gba, .gbc., .sgb., .zip, .7z, .rar).
* Fast, smooth, multi-threaded, and in-game anti-aliasing.
* Supports full sound. Option to mute music.
* Speed up your gameplay with just a press of a single button.
* It holds many lines of codes in a single cheat.
* The most easy to use.
* Support auto save game when exit program.
Free