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.
Koala: Tips, Tricks, Tutorials, and Demos. (Koala Sampler by Elf Audio 🐨)
*Please note: For Koala feature requests, bug reports, bug requests 😄, and other related comments, it might be better to post them over on the main Koala thread:
Thought we could use a thread about the possibilities within Koala, either by itself or with other apps. What have you done with it? 🐨
For starters... this guy (not me) has a bunch of in-depth Koala tutorials on his channel: