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
Generate practice tracks and composition ideas by mixing percussion and melody. Tailor sequences with custom rhythms, keys, scales, and chord progressions. Save MIDI files for further editing in your DAW.
- Generate MIDI sequences
- Mix percussion and melody tracks
- Selectable rhythm, key, scale, and chord progression
- Adjustable melody tracks
- Save MIDI files
- Import to DAW
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MIDI Pro provides practice opportunities and composition ideas. The app allows you to selectively mix percussion and melody tracks so you can play along with your preferred instrument. The generated MIDI sequences are a starting point for human composers to build upon and add more complex layers of instrumentation. A mixture of determinism and randomness is used to construct MIDI sequences that can be tailored to individual preferences. The sequences are seeded with the selected rhythm, notes are are added using the selected key, scale and chord progression. The outcome is a set of tracks that include the percussion plus 4 melody tracks that can be individually adjusted. With the paid version you can save midi files for reuse and or to import them into your favorite DAW.
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. The most recent releases landed on June 4, 2026 and September 21, 2026 respectively.
| Parameter | MIDI FX | MIDI Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 4 — 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








