I decided to open source my two Chip-8 emulators for J2ME and iOS in GitHub.
The code is quick and dirty but fully functional and the emulation part is quite good. All the games I could find for Chip-8 and Super Chip run fine.
In fact, the iOS Chip-8 emulator was published as a paid application on the App Store during more than a year, before Apple kindly told me to remove it from the store due to some infringements of the terms (no emulators please :-()
So here it’s the repository for the J2ME edition: https://github.com/ignasan/J2ME-Chip-8-Emulator
And this is the iOS port: https://github.com/ignasan/iPhone-Chip-8-Emulator