MIDI FX PRO vs Acchordion
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MIDI FX PRO
This app is a powerful MIDI workstation for iOS and Mac, allowing users to control and process MIDI signals. It offers features like harmonization, transposition, arpeggiation, and sequencing for external or virtual synths. It also includes internal instruments and effects for mobile music creation.
- MIDI signal processing
- Harmonize, Transpose, Arpeggiate
- Sequencer for synths
- Delay/looper
- Internal instruments (drums, piano, synth)
- Filter notes by velocity
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Buy once and get the iOS and Mac apps (with Family Sharing) This is the Unlocked Version of MIDI FX. You can buy this version instead of unlocking the free one through IAP 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!
Acchordion
This app helps you learn seventh chords by listening to you play or sing. It provides immediate feedback to ensure you're practicing correctly, making it easier to read music, learn songs, improvise, and write your own. Master these essential chords to enhance your musical skills.
- Listens to instrument or vocal input
- Identifies played notes
- Matches four notes in a chord
- Filters chords by root note
- Filters chords by family
- Provides immediate feedback
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Acchordion is a quiz app for learning seventh chords. Acchordion works by listening to you play your instrument (or sing) into the microphone of your device and identifying the notes you play. Match all four notes in a chord to move on to the next one. You can filter chords by their root note (e.g. C or A-flat) or by chord family (e.g. major or dominant). Why learn seventh chords? Seventh chords are the foundation of jazz and are also common in pop music. Knowing seventh chords will help you: * read music from a lead sheet * learn to play new songs more easily * make new arrangements of songs you already know * improvise over a particular song * write your own songs Acchordion is a fun way to learn these chords! It provides immediate feedback, so you can be confident that you’re practicing the right notes. Once you’ve mastered these basic chords, you’ll be ready to play like a pro!
Screenshots
Verdict
The clearest difference is price: Acchordion at Free against MIDI FX PRO's $9.99. MIDI FX PRO's advantage is device support (4 vs 2) and iOS requirement (14.7 vs 16.6). On rating, ratings volume, 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
Acchordion is free to download; MIDI FX PRO costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for MIDI FX PRO against 5.0 for Acchordion. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
| Parameter | MIDI FX PRO | Acchordion |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 5.0 (3 ratings) | 5.0 (2 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.7 — better | 16.6 |
| Further details — not scored | ||
| Size | 263 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Jorge Arroyo | Oojoo Studio, LLC |
Customer experience
MIDI FX PRO
Acchordion
In-app purchases
MIDI FX PRO
No in-app purchases
Acchordion
No in-app purchases









