Quick answer
Configure MIDI Captain pedals from your phone
Bosun is the Android companion for the PaintAudio MIDI Captain (10-switch, and experimentally the 6-switch Mini 6) running the open-source Bosun firmware. Configure the pedal from your phone and use Stage at a gig.
Features: - Configure footswitches, banks, rigs, LEDs and expression pedals, then save them to the pedal - Profiles for Kemper Player, Head, Rack and Stage, plus Generic MIDI - Stage shows the current rig, bank, effect states, a tuner and Morph controls - Connect directly over USB-OTG, or through a Raspberry Pi hub on the local network or its Wi-Fi hotspot - Android can route MIDI between the Captain and a USB Kemper - No account required; the pedal connection works without internet access
Requires a MIDI Captain running Bosun firmware, installed with Bosun Desktop. Kemper support is experimental: Head, Rack and Stage have not yet been validated on hardware.
How to install
- Download the APK from the button at the top of this page.
- Allow “Install unknown apps” for your browser or file manager only, not for every app.
- Open the downloaded file and confirm the installation.
- If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
- Every file is checked against its published SHA-256 before it is listed.
- Files are scanned for malware on every update.
- The permissions each app requests are listed on its own page.
- Read the full safety policy for how we test, flag, and delist files.
Frequently asked questions
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