Compa vs ScopeNode
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compa
This app enhances your hardware groovebox workflow by providing sample manipulation, pattern creation, and synchronization tools. It offers device-specific controls and integrates with various music production hardware and software.
- Sample capture and manipulation
- Pattern creation and editing
- Hardware device profiles
- MIDI and Ableton Link synchronization
- AUv3 plugin hosting
- Clip and Arrange modes for song structure
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COMPA is a sampling and performance studio for iPhone and iPad. Record new sounds, turn dialogue into playable phrases, scratch your tracks and build a song. Use COMPA's instruments, including Raw Dog 303 (RD303), or connect compatible AUv3 apps, MIDI gear and audio interfaces. Hardware is optional. SAMPLE APPS, THE WEB AND YOUR GEAR Capture supported other-app audio on iOS/iPadOS 27, open a web player inside COMPA, or record hardware and hosted instruments. Send audio straight to CHOMP pads, Clips, Arrange, Takes or Quota DS. Hold for a quick sample or tap to record while you switch apps. Audition, keep sampling, and share web links into COMPA without copying and pasting addresses. Audio Recall saves recent audio when inspiration arrives before Record. QUOTA DS: TURN WORDS INTO SAMPLES Transcribe audio, search the transcript and highlight the words or phrases you want to play. Audition the selection, refine its timing and fades, then send it to CHOMP. Q-Chop helps make sentence and segment cuts. Saved transcripts, flexible reading layouts and a resizable workspace keep longer recordings manageable. Choose Apple speech recognition or an optional downloadable Whisper model that runs locally. CHOMP: PLAY WHAT YOU FIND Record, import, trim, tune, reverse, layer, sequence and resample. Play samples chromatically in Mono or Poly. Perform Live FX, map controls to MIDI and route the standalone FX bank to CHOMP's master or a bus. Quota Stems separates drums, bass, other and vocals on device. Quota Kits imports and exports sampler kits. CHOMP AUv3 is included for compatible hosts. DJ DECKS AND PAD SCRATCH Load Files, song clips or CHOMP samples onto Deck A and Deck B. Scratch, set hot cues, loop, adjust pitch and levels, and mix with EQ, filters and crossfader curves. Analyze tempo and cue suggestions, map performance controls to MIDI, and record your performance. Open Pad Scratch for a single sample, add Cut, Brake or Echo Out, and send the recording to a new pad. RAW DOG 303: INCLUDED BASSLINE SYNTH + AUv3 Meet Raw Dog 303! Create basslines with RD303's 128-step sequencer, pattern library and generator, modulation, stereo effects and note/knob automation recording. It's built into COMPA and included as an AUv3 instrument for other compatible music apps. No extra purchase or unlock. FROM IDEAS TO SONGS Launch Clips and scenes, arrange audio and MIDI, draw automation and mix with AUv3 inserts and sends. Import files where you're working, move and copy clips, normalize audio and export mixes or stems. FETCH develops chords, bass, melody and drums; Guided FETCH works through parts one at a time. Capture linked video, perform it from pads and export MP4 with your audio. A COMPANION FOR YOUR SETUP Tailored workspaces give supported grooveboxes and synths direct controls. Compatible MIDI ports also work without a device profile. Set note channels, Clock and Start/Stop independently, map controllers, assign analog returns through an audio interface, and save your rig with the Session. Sync through Ableton Link, with optional transport and compatible Link Audio connections. One upfront COMPA purchase. No COMPA subscription, account or in-app purchases. RD303 and its AUv3, CHOMP, Quota DS, Quota Stems and Quota Kits are included. Third-party apps and hardware are separate. Other-app capture requires iOS/iPadOS 27 and depends on source playback and system permissions. Optional models and imported media use device storage; selected cloud files download for playback/editing. USB MIDI and USB audio are separate device capabilities.
ScopeNode
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ScopeNode is a multi-input oscilloscope, capable of visualizing multiple tracks layered on top of each other. The plugin features a suite of phase alignment tools built around an interactive visual workflow tailored specifically for the low end. These can help eliminate low-frequency clashes at the source so your tracks layer perfectly without heavy reliance on aggressive sidechain dips. The result is a much smoother, more fluid bass response. Beyond phase alignment, ScopeNode is perfect for visualizing how individual components line up, checking delays between signal points, or analyzing precise pre and post waveform differences across third-party plugins or subchains. FEATURES: - Free-Running & Beat-Synced Modes - 4-Layer Scope Matrix + Live Summing: Layer up to four audio tracks simultaneously with a real-time composite summing view for instant clash detection - Separate controls for visualization and sum inclusion to accommodate special use cases (optional) - Phase shifter with configurable center frequency and Q factor (one per track) - Sample grid delay, phase invert, gain control also available for each track - Multi-instance workflow: Drop plugin instances ("probes") anywhere in your signal paths to capture and compare tracks instantly TECHNICAL NOTES: - When enabled, it's recommended to verify that Plug-in Latency Compensation is not affecting synchronization in unexpected ways with the given set of active third-party plugins - Manual phase alignment is an advanced, hands-on process that requires time and active engineering effort, depending on the complexity of the tracks involved - Workflows could be greatly impacted by specific features of your DAW, e.g. ease of automation envelope editing, ways of laying out multiple viewports, etc. PLEASE NOTE: • An AUv3-compatible host is required to use this app (true interoperability can vary across different apps) • Please check our support page for a list of compatible host applications • Officially supported sampling rates: 44.1, 48, 96 kHz
Screenshots
Verdict
The clearest difference is price: ScopeNode at $4.99 against Compa's $39.99. ScopeNode also leads on in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Compa costs $39.99 and ScopeNode $4.99 up front. Compa sells 2 one-off in-app purchases. ScopeNode asks for nothing beyond the download.
| Parameter | Compa | ScopeNode |
|---|---|---|
| Price | $39.99 | $4.99 — better |
| Rating | 4.7 (7 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Daily | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 126 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | Jordan Mcdonald | quantovox |
In-app purchases
Compa
- Kit Export$9.99
- Compa Unlock$29.99
ScopeNode
No in-app purchases









