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.
End of the road for iPad 1
A small number of stubborn developers has over many years cared for keeping their apps compatible with old devices. Now Apple is informing developers that, starting March 2019, apps must be built with Xcode 10.1 or later. Xcode 10 does not build for iOS 5. This means no more updates for iPad 1 and iPod touch 3g.
As I have just uploaded Rooms! 5.0 to the app store, I would like to ask users with iPad 1 / iPod touch 3g to tell me about bugs as soon as possible. Bugs that I don't fix before March 2019 will stay there forever in iOS 5.