MIDI FX vs MIDI Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MIDI FX
This app allows you to control and process MIDI signals for music creation. It offers features like harmonization, transposition, and sequencing, enabling you to control external or virtual synthesizers and create complex musical arrangements.
- MIDI signal processing
- Harmonize and Transpose
- Sequencer for synths
- Delay and Looper
- Filter notes by velocity
- Internal instruments
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Buy once and get the iOS and Mac apps (with Family Sharing) Control your MIDI signals and process them in any combination of ways: Harmonize, Transpose, Arpeggiate, etc... Or use the Sequencer to play any external or virtual synth. Use a MIDI interface to unlock the power of the app to control multiple synths with one keyboard, play one note and generate chords, basslines, etc... Use the delay/looper or filter notes based on velocity or other parameters to send to different synths/effects. A MIDI workstation in your pocket (or your iPad/Mac) You can also use some internal instruments (drums sampler, piano or synth) if you are away from your MIDI gear, and sequence whole songs inside the app, or use other synth apps as input/output for MIDI FX. Your imagination is the limit!
MIDI Pro
This app generates customizable MIDI sequences for musicians to practice, experiment with musical ideas, and create original compositions. It offers a built-in instrument tuner and allows users to import and play MIDI files.
- Generates MIDI sequences
- Customizable percussion and melody tracks
- Built-in instrument tuner
- Import and play MIDI files
- Save and export MIDI compositions
- Experiment with chord progressions and scales
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**MIDI Pro — Backing Tracks and Composition Ideas** MIDI Pro helps musicians practice, experiment with musical ideas, and create MIDI sequences that can serve as starting points for original compositions. Whether you're practicing an instrument, exploring chord progressions, or developing a new song, MIDI Pro provides customizable percussion and melody tracks to play along with. **Create Your Own Musical Ideas** MIDI Pro combines structured musical rules with an element of randomness to generate unique MIDI sequences based on your preferences. Choose a rhythm, key, scale, and chord progression to create music tailored to your style. Each generated sequence includes percussion and four melody tracks that can be individually adjusted, allowing you to experiment with different musical arrangements. **Practice and Play Along** Selectively enable or disable percussion and melody tracks to create backing music for your preferred instrument. Explore different combinations of rhythms, melodies, and harmonies to inspire your playing and compositions. **Built-in Instrument Tuner** Use MIDI Pro's built-in tuner to tune your instrument before practicing or playing along. The tuner detects the pitch of notes played through your device's microphone, helping you get your instrument ready to play. **Import and Play MIDI Files** Open MIDI files directly from the Files app on iPhone and iPad, or from Finder on Mac. Use MIDI Pro's built-in player to listen to imported MIDI files and navigate through them using playback controls. **Save and Continue Creating** With the paid version, you can save generated MIDI files for later use or import them into your favorite Digital Audio Workstation (DAW) to develop more complex arrangements. MIDI Pro is designed to complement your creativity, providing musical ideas and a flexible environment for experimentation, practice, and composition.
Screenshots
Verdict
The clearest difference is monetization model: MIDI FX at free against MIDI Pro's free with in-app purchases. MIDI FX also leads on update cadence (every 9 days vs every 2 months) and device support (4 vs 2). On price, ads and in-app purchases 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. MIDI FX sells 1 one-off in-app purchase and MIDI Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
MIDI FX ships an update every 9 days, MIDI Pro every 2 months. Both last shipped on November 3, 2026.
| Parameter | MIDI FX | MIDI Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 5 — better | — |
| Update frequency | Every 9 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.7 — better | 16.0 |
| Further details — not scored | ||
| Size | 263 MB | 165 MB |
| Age rating | 4+ | +4 |
| Developer | Jorge Arroyo | renee zuleta |
Customer experience
MIDI FX
MIDI Pro
In-app purchases
MIDI FX
- Unlock app$9.99
MIDI Pro
- Full Access Purchase$12.99









