
Fetch
01Start with an idea.
Generate chords, bass, melody, drums, and atmosphere. Keep what works, change what does not, and shape sections before committing to a timeline.
Your whole hardware studio. One screen.
Compa is the connective tissue between grooveboxes, AUv3 apps, sampling, stems, clips, arrangement, modulation, and mixing. It turns an iPhone or iPad into the center of a hardware-first music-making setup.


From spark to finished structure
Fetch, Clips, and Arrange are not separate islands. They are stages of the same idea, from first generation to live performance to a finished timeline.

Fetch
01Generate chords, bass, melody, drums, and atmosphere. Keep what works, change what does not, and shape sections before committing to a timeline.

Clips
02Turn sketches into scenes, trigger sections, and keep MIDI and audio flexible while the song is still finding its form.

Arrange
03Build the timeline, edit regions and automation, add recorded takes, and export the finished arrangement.
More than a timeline
Compa combines the workflows that usually require a stack of separate apps, while keeping each one deep enough to stand on its own.

Chomp
Record directly to pads, chop audio, build kits, sequence patterns, route four buses, and perform with integrated effects.

Quota Stems Lab
Run four-stem separation on device, detect tempo and cue points, then publish editable stems to Clips and Arrange.

Quota Kits
Organize up to 128 pads, import samples, preserve sequences, and export useful kit formats for the tools you already use.

Mix
See the whole signal path, host AUv3 inserts, use sends and buses, and route each source to the destination that makes sense.

Modulation
Create synced or free-running LFOs, draw motion, build rhythm chains, and carry automation into patterns, clips, and arrangements.

Device control
Compatible gear receives a purpose-built card with scopes, controls, keys, patterns, routing, and device-aware guidance.
Hardware-first, not hardware-only
Compa recognizes supported devices and exposes the controls that make sense for each one. Class-compliant gear can still join the session for audio and MIDI even when it does not have a custom profile yet.
Available capabilities vary by device, connection, operating system support, and what the hardware itself exposes.
Talk gear in the Compa DiscordThe planned launch price is $14.99 USD. The regular price will be $29.99 USD. App Store pricing may vary by country.
One paid app
Looking for the original project?
The open-source Raspberry Pi edition started the story. It is no longer the actively developed Compa product, but its page, source, and MIT-licensed history remain available.