Via the Retronyms blog.
MIDI Pattern Sequencer for iPad. Make a simple song demo.
MIDI Pattern Sequencer is a tool with powerful and at the same time very comfortable, intuitive and easy interface. It is the main feature, through which the sequencer can easily used by anyone, from beginner to professional, and everyone will find it most necessary for their own purposes.
Via Motion Soundscape.
The developer’s site has loads of information about SphereTones, and his other apps too.