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.
Somewhat OT: Need a simple MIDI reader for .mid files
I’m a fiddle player who relies a lot on ear training in tandem with sheet music (because of the nature of traditional music - I read fine but the audio is handy).
I downloaded Sweet MIDI but was disappointed to find out that the last quarter of every imported .mid file is locked behind a paywall. I wanted to make sure there weren’t better recommendations out there before plunging - maybe something that has an adjustable BPM or simply better sound fonts. Thanks!