Hi all,
I made a free, open-source (AGPL-3.0) desktop app for the KeyStep Pro called KeyStepPro Studio. Unofficial, not affiliated with Arturia. No cost, no paid version, no account.
- Read a project over USB, edit patterns in a piano-roll grid, drum patterns, scenes and chains, arp settings, tempo, swing and MIDI channels, then write it back.
- Library of projects and full backups.
- Two editions: Lite (the editor, recommended) and Full (adds a VST3 host).
Safety: it only writes to a KeyStep Pro on the official firmware 2.5.20, with an automatic backup before every write and a read-back check after. Make your own backup first anyway. No warranty.
Windows: installer or portable zip (not code-signed, so SmartScreen will warn).
Mac: zip in the release (unsigned, use Open Anyway). Close MIDI Control Center before connecting.
Screenshots and docs: https://github.com/lgarraza/KeyStepProStudio
Download: https://github.com/lgarraza/KeyStepProStudio/releases/tag/v0.7.0