Chords Explorer vs MOUND
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chords Explorer
This app helps musicians, producers, and songwriters generate and refine chord progressions. It offers various tools like a piano keyboard, guitar fretboard, and random chord generator to spark creativity. Progressions can be exported in multiple formats.
- Piano keyboard and guitar fretboard views
- Random chord generator
- Real-time audio playback
- Smart chord suggestions
- Drag and reorder chords
- Custom Chord Builder
- Export to MIDI, WAV, or TXT
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Spark your next chord progression. Select a chord or roll the dice → build and refine → export to MIDI, WAV or TXT. Chords Explorer is a chord progression builder designed for musicians, producers and songwriters who want to quickly find and explore new ideas. Features Piano keyboard and guitar fretboard views Random chord generator to break creative blocks Real-time audio playback with adjustable tempo and sustain Smart chord suggestions based on music theory Drag and reorder chords in the timeline Inversions and voicing options Custom Chord Builder — define your own chord types with any interval combination Export to MIDI, WAV or TXT Community progressions — vote and discover Sharp / flat / auto notation that follows the detected key Available in English, Français, Español, Русский, 日本語 ABC and solfège notation Export, custom chords and real-time MIDI output are a one-time unlock — no subscription.
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.
Screenshots
Verdict
The clearest difference is review sentiment: Chords Explorer at 100% against MOUND's 67%. Chords Explorer also leads on rating (5.0 vs 4.8) and iOS requirement (15.0 vs 17.0). On price, ratings volume, update cadence and ads 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. Chords Explorer sells 1 one-off in-app purchase and MOUND sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Chords Explorer holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 7 and 8 respectively. Written reviews point the same way: 100% of Chords Explorer's written reviews are positive against 67% of MOUND's.
Chords Explorer ships an update every 8 days, MOUND every 5 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.
| Parameter | Chords Explorer | MOUND |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | 4.8 (8 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 7 | 8 — better |
| Update frequency | Every 8 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 26 MB | 176 MB |
| Age rating | 4+ | 4+ |
| Developer | Loup Vuarnesson | fourtrack.fm LLC |
Customer experience
Chords Explorer
MOUND
In-app purchases
Chords Explorer
- Unlock Exports2 variants$2.99
MOUND
- MOUND Lifetime Unlock$4.99









