MIDITrainer vs Reharmonizator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MIDITrainer
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Train your ear with real melodies from jazz standards and pop classics. MIDI Trainer plays a short melody, then challenges you to play it back on your MIDI keyboard. Unlike other ear training apps that use random notes, MIDI Trainer uses real musical phrases from professional transcriptions, helping you develop practical musicianship. KEY FEATURES: - Real Melodies: Practice with phrases extracted from the Weimar Jazz Database (jazz solos) and McGill Billboard Dataset (pop hits) - MIDI Integration: Connect any MIDI keyboard via USB or Bluetooth - Adaptive Practice: The app focuses on intervals and patterns you find challenging - Multiple Scales: Practice in major, minor, and modal scales - Detailed Statistics: Track your progress and identify weak spots HOW IT WORKS: 1. Connect your MIDI keyboard 2. Choose your scale and difficulty settings 3. Listen to the melody 4. Play it back - the app waits for you to match each note 5. Review your accuracy and learn from mistakes Perfect for musicians, music students, and anyone wanting to improve their ear and sight-reading skills.
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: MIDITrainer at Free against Reharmonizator's $4.99. Reharmonizator's advantage is update cadence (every 6 weeks vs every 9 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
MIDITrainer is free to download; Reharmonizator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MIDITrainer ships an update every 9 months, Reharmonizator every 6 weeks. Both last shipped on October 24, 2026.
| Parameter | MIDITrainer | Reharmonizator |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | — | 4.5 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 9 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 10 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | RIKER TECH, LLC | Martin Adler |
In-app purchases
MIDITrainer
No in-app purchases
Reharmonizator
No in-app purchases








