Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
CPU Load Comparison Article - Contributions Welcome (PLEASE HELP!)
Misconceptions about what the CPU load indicators mean are so common that I've tried to get an article started on the wiki and hope that knowledgeable folks here can help improve and refine it so that we can just point to the article when the topic rears its head.
I've made a rough start at:
If you have something to add or correct or good threads or articles here or elsewhere to point to, please consider sharing your expertise.