A full version program for Android, by John emulators.

John GBA is an emulator designed for Android devices, specifically for Game Boy Advance games. Users are required to provide their own game files and have the option to try out the lite version before purchasing. 

John GBA offers features such as cheat code support, high-quality graphics, customizable controls, save states, turbo buttons, and the ability to capture screenshots. It is compatible with Bluetooth and MOGA controllers, integrates with Dropbox for data synchronization, and operates without advertisements or an internet connection. To ensure optimal performance, it is recommended to have a device with a 1.0GHz dual-core CPU and at least 1GB of RAM.