Fake SID is a free C64 music tracker application available for Android. It allows users to create and edit music using the SID chip sound, which was popular in Commodore 64 games in the 80s.

The application is easy to use and has a simple interface that resembles the original C64 tracker. It includes a variety of features such as pattern sequencing, sample importing, and waveform editing. The program also offers the ability to save and export your compositions in various formats, including SID and MIDI.

Overall, Fake SID is an excellent tool for anyone who wants to create C64-style music on their Android device. With its user-friendly interface and powerful features, it's a great option for both beginners and experienced musicians. You can check out some demo songs on SoundCloud to get a better idea of what the program is capable of.