This update from Apple will improve the functionality of this app. No new features are included.

Add  MIDI Channel Select Function
How to set channel.
(1) Click "Setting" App
(2) Click "Super Manetron"
(3) Set MIDI Channel

- Correction of key pitch
- Bug Fixes

Compatible with iPhone6s/6s plus

- Optimized appearance on iOS 7 / 8
- Supports Audiobus and Inter-App Audio (requires iOS 7 or later)

- iOS 7 compatibility updates
- Audiobus update

Correct the version number of the info panel

Bug fixes, Change application's name

add Audiobus support

- Support iPad as universal app.
- Adjust ADSR
- Bug fix