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.
Let’s talk about midi sequencer timing
Our very helpful member @xor put together a project in AUM to test the accuracy of AU midi sequencers. Now @xor is not claiming that this is super scientific in any way but it is interesting to see the initial results. It may help developers hunt down where timing appears to be off.
On the session I have saved I have the following AU sequencers (their note numbers at the front of their name):
2 Snakebud = late (0011)
4 Rozeta Cells
5 Riffer = early (0992)
36 EG Pulse = late (0011, 1003)
In my testing it looks Snakebud and EG Pulse play late and Riffer plays before the beat (measured in milliseconds).
Try it at home! You may have other sequencers or get different results.
Thank you @xor for this cool utility.