Scalebud is a new AUv3 MIDI plugin for iOS, described as a music theory tool for composers, artists, and learners. Here's what its developer, Cem Olcay, has to say about it...
It has more than 40+ scales and you can list either notes or chords for them in any key you want. With the keyboard on the bottom, you can send MIDI notes of the chords or notes. It comes with the standalone mode, Audiobus MIDI Sender & Filter modes, and the AUv3 mode:
Pricing and Availability:
$4.99 at the app store.
Friktion strings, iZotope RX-8, Pendulate, Jupiter 6, FSS MTX8