Compa: Groovebox Companion

Sample, sequence, sync & play

$24.99 · Designed for iPad. Not verified for macOS.

COMPA 1.3 adds MIDI Capture, improved audio Recall, four-layer CHOMP stems, song-section cues, a simpler Input/Output route, and deeper Clips and Arrange editing. Give your groovebox a compa. COMPA is a music-making companion for iPhone and iPad. Keep the workflow you love on your hardware, then use COMPA to sample, sequence, shape a sound, catch a take, and build a song. External hardware is optional. BUILT AROUND YOUR GEAR Supported devices get tailored controls and MIDI defaults. Work with SP-404MKII effects, P-6 granular controls, T-8 rhythms, EP-40 pads, or the EP-136 Sidekick's audio pairs. Other compatible class-compliant USB audio interfaces can provide input and output without a dedicated device profile. MIDI and audio are separate capabilities; cables, adapters, hubs, interface settings, and available channels depend on your setup. CHOMP: SAMPLE, STEM, CHOP, PLAY Record onto a pad, import a sample, or hold an empty pad to capture from its chosen source, including the built-in mic when selected. Trim, tune, reverse, fade, sequence, perform, and resample. Send CHOMP audio to Clips or Arrange, or load the included CHOMP AUv3 instrument in a compatible host. Quota Stems Standard 4 separates drums, bass, other, and vocals on device. Keep the four aligned on one pad, focus and mute roles separately, and edit them together. CHOMP's waveform views support zoom and pan. CHOP can find editable song-section cues and turn them into cuts on playable pads. Full-song separation takes processing time and an optional user-initiated model download; it is not instant stems. CATCH YOUR PERFORMANCE Play through a connected groovebox or MIDI controller, then use Capture MIDI to replay the MIDI COMPA actually received through its instrument. Hold Capture MIDI for phrase/window, loop, tempo, and placement choices. Audio Recall keeps a rolling post-effects mix. Its new trim can remove unused silence at the start and end, leaving the rescued take ready for Takes, Clips, Arrange, or CHOMP. +REC rescues the past and continues forward. CLIPS, ARRANGE, PATTERN, FETCH Launch loops and scenes in Clips, then develop them in Arrange. Edit audio and MIDI, adjust waveform fades, and copy or duplicate without silently replacing other material. Play Keys without leaving Clips or Arrange and reopen a hosted AUv3 source from its audio track. Pattern builds melodic or drum grooves and can sequence the selected CHOMP pad bank. FETCH develops chords, bass, melody, and drums with built-in voices, compatible AUv3 instruments, or MIDI gear. MIX, ROUTE, SYNC Mix sources with AUv3 inserts and sends. Route begins with labeled Input, COMPA, and Output controls; choose a live stereo pair or one mono channel, and turn on live input monitoring only when wanted. COMPA guards known groovebox USB-return paths and asks before same-interface monitoring. On supported routes, input and output may use different devices. Bluetooth listening uses the system output picker; wired or USB is better for tight timing. Join Ableton Link for tempo and optional transport sync. Compatible Link Audio peers can share COMPA's mix or source channels over a local network. Wireless audio is buffered; it is not a substitute for low-latency wired monitoring. MIDI Matrix and Rig Setup keep controller claims, outgoing MIDI channels, Clock, and Start/Stop choices visible per connected device. QUOTA KITS INCLUDED Build, import, organize, and export playable sampler kits with Quota Kits. Quota Stems and Quota Kits are included in COMPA. Desktop Quota tools and third-party AUv3 apps are separate products with their own capabilities. One upfront COMPA purchase. No COMPA subscription, account, login, or external hardware required. COMPA is an independent Rare Data product and is not made by or affiliated with the hardware manufacturers named above.

  • 4.7
    out of 5
    6 Ratings

COMPA 1.3 makes it easier to capture, chop, route, and build a song. MIDI CAPTURE AND AUDIO RECALL Play a connected groovebox or MIDI controller, then tap CAPTURE MIDI to replay the MIDI it sent through the instrument. Hold CAPTURE MIDI for latest phrase or whole-window capture, autoplay, looping, optional detected Session BPM, and Clips or Arrange placement. COMPA's existing audio Recall has a new trim: it cuts dead air before and after your playing, so the rescued take is already clipped and ready to use. Hold RCL to choose a 30-second to 5-minute look-back (1 minute by default) and trim settings. Keep the original, or send a copy to Takes, Clips, Arrange, or an empty CHOMP pad. +REC catches the past and keeps recording forward. CHOMP AND QUOTA STEMS Separate drums, bass, other, and vocals on device, aligned on one pad. Focus or mute a layer, adjust its level, and link trim, fades, and pitch. Match a sample or all four stems to the Session with pitch-preserving Complex. Full-song separation and matching run offline, not instantly. CHOMP's main waveform and editors now pinch-zoom around your fingers, pan, and show a moving playhead. In CHOP, find song-section cues, audition and move them, focus a section, then make equal, transient, or lazy cuts. Send cuts to pads with one choke choice; four-stem cuts stay aligned. CHOMP Pattern reaches all 16 pads in each A-H bank. Record a pad from a chosen source, including the built-in mic. Send CHOMP audio to Clips, Arrange, or both, and resample its played output. SAMPLE TEMPO AND KEY See a pad's source BPM, estimated or tagged key, and playback pitch without digging through its editor. Analyze or correct source information, set the Session tempo, or match the sample to it. Optional Auto Match can align new samples to Session tempo; an ambiguous estimated key does not automatically change pitch until you confirm it. Estimates can be wrong, and manual correction and Undo remain available. CLIPS, ARRANGE, PATTERN, AND FETCH Play Keys inside Clips and Arrange. Hold to copy, paste, or duplicate clips and regions; duplicates find free space on the same track, and occupied paste targets ask before replacement. Adjust audio fades from waveform handles. Audio tracks can reopen their hosted AUv3 source instrument. Add Audio to Song from CHOMP, hosted instruments, or Link Audio. Pattern keeps favorites, filters, and Set BPM; iPhone shows steps 1-8 above 9-16. FETCH Listen adds editable Call/Answer phrases and Build Around Phrase. ROUTE, SYNC, AND CONTROLLERS Route now starts with clearly labeled Input, COMPA, and Output controls. Choose the connected device, then its available stereo pair or individual mono channel. Optional input monitoring stays off unless requested, with protection for groovebox USB returns and an explicit safety choice for conventional same-device interfaces. Compatible class-compliant USB audio interfaces no longer need a dedicated card profile. Bluetooth listening is available through the system output picker; wired or USB remains best for tight live timing. MIDI Matrix shows live controllers. Claim one for the focused device, choose an outgoing MIDI channel, and manage Clock and Start/Stop separately for connected devices. Identical supported devices can keep separate cards and MIDI routes. Link Audio sharing between COMPA devices has a tighter, more stable receive buffer. EVERYDAY POLISH Workspace Density offers Learn for extra guidance, Clean for less on-screen explanation, and Symbols for the leanest icon-first view. The CHOMP editor uses full-word tabs, optional pad names, and clearer stem controls. Mix has compact record, solo, and mute symbols; Clips MAIN shares its tracks' meter/fader design. Fixes include stem loop/focus playback, transient coverage, resample pitch, AUv3 reopening, and route/transport regressions. COMPA only captures MIDI a device sends. Hardware and AUv3 support vary; built-in tools need no gear or account.

The developer, Jordan Mcdonald, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    Jordan Mcdonald
    Size
    51 MB
    Category
    Music
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • iPad
      Requires iPadOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Rare Data LLC