caTTho vs Chords Explorer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
caTTho
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If you have any idea for good guitar or bass riff, note it using this app and export it to file or raw text.
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.
Screenshots
Verdict
The clearest difference is update cadence: Chords Explorer at weekly against caTTho's every 7 months. Chords Explorer also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support 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. caTTho sells 1 one-off in-app purchase and Chords Explorer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
caTTho ships an update every 7 months, Chords Explorer weekly. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.
| Parameter | caTTho | Chords Explorer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (7 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 7 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Vlastimil Stefl | Loup Vuarnesson |
In-app purchases
caTTho
- Premium fatures$0.99
Chords Explorer
- Unlock Exports2 variants$2.99
