This application is a rhodes synthetizer automata. It features a chord dictionary and a simple mechanism to let you build chord progressions. It also features a playing board and very fun 'dub-delay'.
PPP is a framework offering to support midi jamming over wifi features to audio applications and instruments. That means that apps can be connected to each other over wifi with a slave/master paradigm, enabling each sequencer to be in synch with each others. It can of course be used as a standalone sequencer. More here : http://ppp.mgsx.net