ChibiTracker is not currently in development but downloads are still available from Freecode (http://freecode.com/projects/chibitracker) & SourceForge (https://sourceforge.net/projects/chibitracker.berlios).
Homepage not available. Development outdated.
The SidTracker 64 is a complete chiptune production package for iPad. It features a new emulation of the SID soundchip found in the commodore 64, a sequencer, instrument editor including advanced wavetable editing and MIDI input with assignable controls for any control surface.