MOUND vs Splitonic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MOUND
Create unique music by layering sounds and applying effects with intuitive touch controls. Explore chord progressions, sonic combinations, and evolving soundscapes.
- Collage soundscape sequencer
- Four mix channels
- 100+ soundfont instruments
- Paint to drive effects
- Euclidean sequencing
- Choose key, scale, BPM, and sequence length
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A collage soundscape sequencer. MOUND is a unique touch instrument (standalone and AUv3 instrument and MIDI included) that uses collage and paint to generate music. You get four layers of stamps to populate chord progressions automatically using euclidean sequencing, and up to 6 paintbrush effects to use your gestures for uninhibited sonic combinations. FEATURES - Four mix channels — chord channel, and three other voices to layer. - 100+ soundfont instruments - Paint to drive effects — use X/Y and hold to control effects - Evolve — mutate your canvas and hear new possibilities - Choose key and scale - Choose BPM and sequence length - FREE Cassette Effect and Granular Delay Free to play. Unlock the full SoundFont library, advanced EVOLVE theory settings, and the rest of the spray effects. Built by fourtrack.fm.
Splitonic
This audio unit plugin for iOS and macOS splits sound into harmonic and percussive components using spectral decomposition. It's ideal for remixing when stems aren't available, offering real-time processing and adjustable filters.
- AUv3 Plugin for iOS & macOS
- Spectrogram decomposition
- Real-time processing
- Adjustable median filter sizes
- Configurable separation threshold
- Three-way separation
- Preset system
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Splitonic is an AUv3 audio unit for iOS and macOS. It is a filter based on the Fourier spectrum of the input signal and can be used to split the sound in a harmonic and a percussive component. Ideal for remixing when no separate stems are available. Features: - AUv3 Plugin for iOS & macOS. - Spectrogram decomposition: Splits an audio signal into controllable pitched and transient energy layers. - Real time processing: Low-latency controllable by the user. - Kernel dimensions: Adjustable horizontal (time) and vertical (frequency) median filter sizes. - Separation threshold: Configurable threshold to trade off separation isolation against musical artifacts. - Three-Way Separation: Isolates an additional "residual" or noise component to capture background hiss, vocals, or applause. - Preset system: with factory and user presets, plus import/export. - Demo mode available: purchase to unlock full version. - Optimized layout: for portrait and landscape orientations.
Screenshots
Verdict
The clearest difference is rating: Splitonic at 5.0 against MOUND's 4.8. Splitonic also leads on device support (4 vs 2) and iOS requirement (15.6 vs 17.0). MOUND's advantage is update cadence (every 5 days vs every 2 weeks) and ratings volume (8 vs 2). On price, ads, in-app purchases and monetization model 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
Both are free to download. MOUND sells 1 one-off in-app purchase and Splitonic sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Splitonic holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 8 and 2 respectively.
MOUND ships an update every 5 days, Splitonic every 2 weeks. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.
| Parameter | MOUND | Splitonic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (8 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 5 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 176 MB | 10 MB |
| Age rating | 4+ | +4 |
| Developer | fourtrack.fm LLC | Jan Maes |
Customer experience
MOUND
Splitonic
In-app purchases
MOUND
- MOUND Lifetime Unlock$4.99
Splitonic
- Splitonic Activation$4.99








