Jamulator vs Reharmonizator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jamulator
Create musical arrangements quickly using intuitive grids and over 100 instruments. Collaborate with friends on jam sessions and share your creations with the community. Features a sampler for recording and manipulating audio.
- Player-piano-like grid interface
- Over 100 instrument voices
- Real-time collaborative jamming
- Audio sampler with pitch manipulation
- Publish and share creations
- Quantization for musical results
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Using player-piano-like grids, finger paint drums, then choose from over 100 other instruments to create musical arrangements in just minutes. You can zoom in to arrange your notes with precision, or just swipe and see what sounds come out. Quantization makes most of your casual swipes sound interesting and musical. Once you have something you like, you can forward it to friends so they can add parts to the jam session. When you think it's finished, you can publish it for all app users to listen to. There is also a sampler that lets you record audio, and then play notes of different pitch using the same player-piano-like grid. You can make your voice sound like a chipmunk, or like Darth Vader. A very high quality musical instrument using general MIDI 2 standard voices. New in 2.1.0: Live realtime jamming. There is still a little lag, but because of the metronome it feels like you are actually jamming. You are certainly interacting musically in close to realtime.
Reharmonizator
This app is a professional tool for musicians to create, analyze, and reharmonize chord charts. It offers intuitive chord building, real-time playback with multiple instrument sounds, and melody composition features. Export your musical creations as MIDI files.
- Intuitive chord builder
- Automatic chord detection
- Real-time harmonic analysis
- Jazz reharmonization techniques
- Real-time playback with multiple instruments
- Melody composition and editing
- MIDI export
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Harmonizator is a professional chord chart editor and reharmonization engine for musicians, composers, and jazz students. BUILD YOUR CHART Enter any chord progression using the intuitive chord builder or tap notes on the piano keyboard — the app detects the chord automatically. Supports all chord types: triads, seventh chords, extended harmonies, slash chords, and more. ANALYZE YOUR HARMONY Get instant harmonic analysis of your progression: key detection, Roman numeral notation, chord function (tonic, dominant, subdominant), and II-V-I pair highlighting. REHARMONIZE WITH PROFESSIONAL TECHNIQUES Apply jazz reharmonization tools used by professional arrangers: Secondary dominants Tritone substitution Related II (ii-V) Modal interchange Bass change & inversions Hybrid / polychords Chromatic approach Parallel voicing Cadential 6/4 & Sus Backdoor dominant HEAR IT IN REAL TIME Play back your progression with Rhodes, Synth, Guitar, or Choir sounds. Adjust tempo, time signature, chords per bar, and individual volumes for chords, bass, and drums. ADD A MELODY Write, record, or generate a melody over your chord chart. Edit notes in a piano roll or view them on a staff. Export your work as a MIDI file.
Screenshots
Verdict
The clearest difference is price: Jamulator at Free against Reharmonizator's $4.99. Jamulator also leads on update cadence (weekly vs every 6 weeks) and iOS requirement (11.0 vs 18.0). Reharmonizator's advantage is rating (4.5 vs 3.8) and in-app purchases (none vs 1). On ratings volume, ads 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
Jamulator is free to download; Reharmonizator costs $4.99 up front. Jamulator sells 1 one-off in-app purchase. Reharmonizator asks for nothing beyond the download.
Reharmonizator holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 5 and 2 respectively.
Jamulator ships an update weekly, Reharmonizator every 6 weeks. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.
| Parameter | Jamulator | Reharmonizator |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 3.8 (5 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | 2 |
| Update frequency | Weekly — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 159 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | Eric Ford | Martin Adler |
Customer experience
Jamulator
Reharmonizator
In-app purchases
Jamulator
- Remove Ads$0.99
Reharmonizator
No in-app purchases









