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.
AudioShare and USB drives
Since I'm on iPadOS now I just bought a 256MB USB thumb drive. It works very well and I intended to store my sample library on it. But in AudioShare I don't see the drive although it is visible in the files app. As the audio preview in the files app is quite inconvenient to preview through a directory of files I wanted to do this in AudioShare. Does anyone have a solution for that?