AcidBass is meant to be used with other PPP instruments.

AcidBass is a polyphonic synthetiser/sequencer which allows you to customize each step with gliding parameters. Although its name contains bass it can also be pretty efficients for leads....

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