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.
I made a Pad-based Midi Controller app with MPE support (Open Source)
I made this app to control midi with a flexible pad grid layout. It supports MPE or polyphonic aftertouch by touching and swiping. Just wanted to know what you are thinking about such an app, so I can kind of gauge if it is worth investing more time into it.
I am also happy to hand out promo codes, so you can download it for free.
I am currently a bit on the fence about what approach is better. Should I make it open source and free on the store, and maybe just leave a buy-me-a-coffee link in the app? Or should I try to promote it more and maybe get a little bit of money back.
I think I would be happy to make it open source, but Apple is charging a ridiculous amount per year (200USD) for the privilege of providing even a free app. It would be nice if I wasnt out of pocket as well as putting time into coding.
Please let me know what you guys think.
edit: Thanks to a suggestion from @catherder, I made the app open source now, while still keeping the compiled versions on the app stores. You are free to modify it or build it yourself to use it for free. Here is the code, and any dev help is appreciated: https://github.com/anzbert/beat_pads