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.
Music apps you don't like or disappointed you
We are all constantly posting about apps we love, and it seems that a lot of the time, when anyone has a negative thing to say about an app, people get super defensive. I think having a conversation about what apps we don't like any why is important for both users and developers. I'll post my thoughts in another post so as to not influence or hijack this "post prompt".