ChordMapMidi vs RPLY
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChordMapMidi
This app is a MIDI controller for exploring musical chords and progressions in major and minor keys. It sends note information to other synthesizer apps on your device, making it a portable tool for musicians and educators.
- Explore chords and progressions
- Major and minor keys
- MIDI controller functionality
- Sends note information to synth apps
- Portable music tool
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ChordMapMidi allows you to explore chords and chord progressions in both major and minor keys, one finger tap at a time. Note: ChordMapMidi is a MIDI controller. It doesn't create sound on its own. It sends note information to synthesizer apps you have on your device. ChordMapMidi is useful for songwriters, MIDI musicians, music educators... especially in places where the only instrument you have is the phone in your pocket. Have fun exploring chords and progressions!
RPLY
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Do you ever find yourself: - transcribing, - copying, - improvising to, - playing along, - learning by ear, - analyzing, - studying, - annotating, - dancing, - acting, or just getting close to a piece of music by replaying a specific part of it again and again? RPLY (pronounced replay) is a music player designed to aid you in these specific tasks with the help of Apple Music.
Screenshots
Verdict
The clearest difference is price: RPLY at Free against ChordMapMidi's $3.99. RPLY also leads on update cadence (every 2 days vs every 8 months). On ads, in-app purchases, 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
RPLY is free to download; ChordMapMidi costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ChordMapMidi ships an update every 8 months, RPLY every 2 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | ChordMapMidi | RPLY |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 52.9% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 8 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Malcolm Mugglin | Fortunity Labs |
In-app purchases
ChordMapMidi
No in-app purchases
RPLY
No in-app purchases
