# MIDI FX PRO

> Mobile MIDI workstation for signal processing, sequencing, and internal instrument use. (iPhone/iPad app by Jorge Arroyo.)

- Source: https://appshunter.io/ios/app/midi-fx-pro/id6444039855 (this page in markdown: same URL + `.md`)
- Developer: [Jorge Arroyo](https://appshunter.io/developer/548989572)
- Category: Music
- Price: $9.99
- Rating: 4.00/5 from 4 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.7 · 263 MB
- Languages: American English
- Released: 2022-10-30
- Data updated: 2026-07-05
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/midi-fx-pro/id6444039855/reviews.md

## What is MIDI FX PRO?

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!

## Key features

- MIDI signal processing
- Harmonize, Transpose, Arpeggiate
- Sequencer for synths
- Delay/looper
- Internal instruments (drums, piano, synth)
- Filter notes by velocity

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/midi-fx-pro/id6444039855/reviews.md

### 1/5 — Frustrating app

*2025-06-05*

When first purchasing this app, I never realized it was such a major deep learning curve. I had Cubasis 3 opened, tried different settings on the Midi FX pro app, nothing worked. Then when trying to get support, I was driven in a circle every time I tried signing into my google account from the mail app from apple. I was hoping also for FX to be added right away in the digital audio workspace. Very frustrating and a huge learning curve especially from someone with low vision and have little experience using midi other than to plug in a device for the DAW, and it starts working.

### 5/5 — Fun Modular Midi App

*2023-10-01, version 1.3.1*

This is a fun Midi and audio environment to make interesting audio projects. 

When you get used to it then it’s fairly simple to use though there could be a few GUI features to help build projects and speed up workflow, like for example with the Merger node you could have a + button to add an extra input etc.

The app is a good purchase though and definitely looking forward to future updates, if your interested in more creative midi setups then this is something to take a look at.

The following comments below and some ideas for the developer to consider and some bugs i noticed.

- Ideas for the app:

Like another review mentioned having Midi AU3 support would be great since this is a midi based app.

It would be great if there was a favourites system to quickly re-use popular synths and effect with the AU3 loaders.

It would be good if there was control page and a way to link sliders and buttons etc so you perform a music set with a project.

Being able to group then re-use groups would be interesting as you could then make a setup for say an arpeggios sound you like then re-use it with another project.

A global volume control by the play and stop button.

Being able to expand the keyboard control larger would be useful.

- Suggestions for new nodes:

Drum pad
Note Chance (Set the probability the note will pass through)
Midi triggered switch (Switch when a note event is received)
Random switch (Switch randomly based on clock and probability)
Wav sample player
Simple oscillator (Where you can set a Hz frequency and waveform)
Crossfader
Latch (Hold note)
Quantize

Simple Generator And Arp (The current nodes are good but it would be good if there were also very simple ones to send out a constant repeating note or arpeggio pattern)

- Bug reports:

If you click a AU3 that’s been setup to pick another it instantly changes rather than keeping the old setting. 

If you go to load a project then there is no confirm before switch if a project is already open.

Misc:

Apple Shortcuts, URL Schemes and widgets to launch projects etc. This could allow for some interesting options.

### 4/5 — One of the best apps to be creative with MIDI - please allow AUv3 MIDI effects

*2023-09-16, version 1.3.1*

No coding required and a very well designed UI makes this an ideal playground for MIDI experimentation.
Please add support for AUv3 MIDI modules.
And please improve the AUv3 module browser that currently does not seem to follow any logic for sorting the modules. I would add a search bar.

### 1/5 — Non functioning on 13.1

*2023-07-16*

App crashes as soon as it opens, seemed like a fun thing, but havent been able to use it

## Frequently asked questions about MIDI FX PRO

### What devices does MIDI FX PRO support?

MIDI FX PRO is available for Mac, iPhone, iPad, and iPod. The purchase includes both the iOS and Mac applications, with support for Family Sharing.

### How much does MIDI FX PRO cost?

MIDI FX PRO is a paid application priced at $9.99. This one-time purchase unlocks the full version for both iOS and Mac devices.

### Does MIDI FX PRO have ads?

No, MIDI FX PRO does not contain advertisements. It is a premium application that can be purchased outright.

### When was MIDI FX PRO last updated?

The latest version of MIDI FX PRO, 1.4.7, was last updated on October 21, 2025. The app was initially released on October 30, 2022.

### What is the age rating for MIDI FX PRO?

MIDI FX PRO has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals.

### Can MIDI FX PRO be used to control external synthesizers?

Yes, MIDI FX PRO is designed to control external or virtual synths. It allows you to use a MIDI interface to control multiple synths with a single keyboard or generate complex musical patterns.

### Does MIDI FX PRO offer a free trial?

The provided data indicates MIDI FX PRO is a paid app at $9.99 and does not mention a free trial. It is presented as an unlocked version that can be purchased instead of unlocking a free version through IAP.

### What kind of internal instruments are included in MIDI FX PRO?

MIDI FX PRO includes internal instruments such as a drums sampler, a piano, and a synth. These allow for music creation even when away from external MIDI gear.

## Version history (last 5 releases)

### 1.4.7 — 2025-10-21

Compiled with iOS26 SDK for better compatibility

### 1.4.6 — 2024-01-24

- NEW: Buttons to add a module between two connected modules: Long press on a connected module or move it and "+" buttons will appear on the link cables to add the new module and automatically insert it in the chain (as long as it has the correct inputs and outputs)
- Revised concurrency for better performance.

### 1.4.5 — 2024-01-06

- Added a "Pure Delay" module which you can use to delay or repeat a command a number of times by a set time or number of beats. You can configure it to either let the original command through or just the delayed "copies"
- Added the possibility to set negative intervals on the Hexagonal Keyboard. You can now set it up so notes go down when you go up the rows or columns.
- Fixed a bug on the settings: You can now set numbers on the text fields and they will get updated correctly

### 1.4.0 — 2023-12-07

- NEW HEXAGONAL KEYBOARD
- New module menu button to "hide" a module and get it out of the way if you're not currently tweaking it. Long press on the module and choose the last button to hide/show the module.
- Fixed a few small bugs

### 1.3.1 — 2023-01-14

- Changed how the modules receive MIDI Clock for a 3x boost in performance
- Added the option to duplicate the currently selected module (just click on a module and it will show in the Add Module Screen)
- Fixed a small problem where you couldn't drag the Sequencer module from the area of the Select and Copy buttons when they weren't visible
- Added a new project to the Examples to show the Trigger Input on the Sequencer
- Fixed some memory problems

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## More apps by Jorge Arroyo

- [Vector Star Brawl](https://appshunter.io/ios/app/vector-star-brawl/id548989569)
- [piecepack](https://appshunter.io/ios/app/piecepack/id581537337)
- [Home Photo Widget](https://appshunter.io/ios/app/home-photo-widget/id1532412624)
- [MIDI FX](https://appshunter.io/ios/app/midi-fx/id1641511918)

All apps by Jorge Arroyo: https://appshunter.io/developer/548989572

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*