# MidiFire — MIDI Signal Processor

> Modular AUv3 MIDI effect host, router, processor, monitor, and clock source. (iPhone/iPad app by Audeonic Apps.)

- Source: https://appshunter.io/ios/app/midifire/id906600872 (this page in markdown: same URL + `.md`)
- Developer: [Audeonic Apps](https://appshunter.io/developer/351607509)
- Category: Music, Utilities
- Price: $11.99
- Rating: 4.50/5 from 17 App Store ratings · 28 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 8 MB
- Languages: American English
- Released: 2017-09-22
- Data updated: 2026-08-21
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/midifire/id906600872/reviews.md

## What is MidiFire?

MidiFire is a free-form, modular AUv3 MIDI effect host, CoreMIDI router, processor, monitor and clock source from the makers of MidiBridge.

Drop and arrange MIDI ports and modules onto the canvas however you like and connect them up to start routing and processing your MIDI events. Pan, zoom and scroll the canvas. Add as many ports and modules as you wish. Connect them in series or parallel. Cascade them together. Merge and split. You can create highly complex MIDI processing setups. Or keep it simple - the choice is yours.

▶ FEATURES

Essential processing modules for channelising, filtering, transposing, 'monofying', remapping and monitoring - or create your own. All included with the standard app.

A highly accurate remotely controllable MIDI clock source.

Save your work into recallable/re-usable scenes. Share your scenes with other devices, computers and people. Switch between your scenes via configurable MIDI program change messages.

Download even more functionality within the app for free using the 'Scenes Club' for useful and special-purpose scenes that you can incorporate into your workflow.

Initiate and connect Bluetooth MIDI sessions within the application.

Define multiple virtual CoreMIDI ports to segregate your MIDI streams.

▶ COMPATIBILITY

MidiFire supports all CoreMIDI hardware interfaces, the network interface, virtual ports (self owned or other apps') and Bluetooth MIDI.

Also available for mac on the Mac App Store. Scene files are interchangeable between iOS and macOS.

▶ STREAM BYTER (II)

What sets MidiFire apart is the newly extended Stream Byter module first pioneered in MidiBridge. With this you can write your own processing modules using textual rules.

Newly added constructs to the Stream Byter include: IF/THEN, local/global variables, mathematical functions, timing variables, 'onload' rules, setting of block labels and sending arbitrary MIDI data. The Stream Byter is backwards compatible with rulesets you already have from MidiBridge; just copy/paste them in.

▶ NICHE MODULES

Also included are some specialised modules:

• Tracking Clamp - reduce tracking miss-hits from MIDI guitars.

• Robotic Knob - generate complementary CC messages to control synths and FX based on your playing.

• OSC Exchange - send and receive OSC data across a MIDI channel (DIN, USB, wifi or Bluetooth) between MidiFire instances.

▶ FURTHER INFORMATION

For tutorial videos, full manual and more, please visit the MidiFire website - http://midifi.re

For assistance in writing Stream Byter rules please email us or join the 'Audeonic Soapbox' forum - http://soapbox.audeonic.com and post your requirements there.

* Powered by the MidiBus library.

## Key features

- Modular MIDI effect hosting
- CoreMIDI routing and processing
- Customizable MIDI processing setups
- Save and share MIDI scenes
- Bluetooth MIDI support
- Stream Byter for custom rules
- Specialized MIDI modules

## Recent user reviews (10 of 28)

All indexed reviews: https://appshunter.io/ios/app/midifire/id906600872/reviews.md

### 5/5 — Will this great app, by a great developer, keep up with Apple's weekly changes?

*2026-02-05, version 2.1*

I've been using MIDIfire for years now... I thought I'd written them a rave review years ago... but I can't see it here (am I going mad or did I imagine that)?! It's an absolute workhorse for anyone wanting to use iOS (or other OSs) to process MIDI messages - the sky's the limit!
But...I'm hoping that this app (and it's fabulous developer) haven't given up keeping up with the massive number of changes that Apple makes to iOS each year? On my iOS 26.x devices, this app now displays wrong. Will this be updated? 
On a positive note the current version supports older iOS really well and I can still develop changes to my MIDI messaging on an older device and then pick up that file on my newer iOS. Crazy, heh?

### 3/5 — Auv3 not working

*2025-12-18, version 2.1*

It doesn’t show up as auv3 in cubasis. It only works as a standalone and then routing via midi to the daw. You say in the description auv3, it should work in midi effects with auv3 if you advertise that. Take it out of the description

### 1/5 — Changing midi channels doesn‘t work

*2024-03-23*

Just wanted to switch to midi channel 16 with a channel strip since my bluetooth keyboard is only sending on channel 1. It doesnt work and midi wrench is still receiving data on channel 1.

### 5/5 — Essential

*2024-03-18, version 2.1*

This is just what I needed to coordinate the BandHelper app with a CME WIDI Jack and an AIRSTEP Lite. The monitor and filter functions are super helpful!

### 5/5 — Amazing!!

*2023-09-20, version 2.1*

Now my midi controller can do ANYTHING! plus a bunch of more stuff! Thank you audeonic apps!! 

It might take you a bit to figure it out but once you do 🤯

### 5/5 — The MIDI sync solution

*2023-03-29, version 2.1*

I have been trying to get my ipad pro to communicate with my pc for months. This is the only app that has worked in conjunction with rtpMIDI. When I actually received a MIDI signal in Ableton, it was truly magical! Thank you!

### 5/5 — Still searching

*2022-10-17*

Is there a way to transform a midi controller range into note signals? I want to generate keyswitches from a controller (Maybe modulation wheel) so cc values from 0 to 20 would trigger a midinote c0, values from 21 to 40 would trigger the note c#0… etc… is that possible?

### 5/5 — Incredible midi resource

*2021-06-16, version 2.1*

I have been using this app for over 6 years and I keep going back to using it.  The developers has contributed to my projects by providing insights and examples on the application

### 5/5 — IOS14

*2020-10-18, version 2.1*

Excellent app but don’t seem to be compatible with ios14. Can you confirm ?

### 5/5 — Indispensable Midi App

*2020-03-01, version 2.1*

This app fixes many things missing in other apps using it’s free form canvas layout. Some of the programming can go deep though so be ready for that however the developer’s forum is very helpful as is the developer.

## Frequently asked questions about MidiFire

### What does MidiFire do?

MidiFire is a free-form, modular application that acts as an AUv3 MIDI effect host, CoreMIDI router, processor, monitor, and clock source. It allows users to visually connect various MIDI ports and processing modules to create complex MIDI signal chains for music production and audio manipulation.

### What are the key features of MidiFire?

Key features include a modular canvas for arranging and connecting MIDI ports and modules, essential processing modules for filtering and transposing, a highly accurate MIDI clock source, the ability to save and share MIDI scenes, Bluetooth MIDI connectivity, and the powerful Stream Byter module for creating custom processing rules.

### Is MidiFire free to use?

Yes, MidiFire is a free application. While the core functionality is included, users can download additional functionality for free through the 'Scenes Club' for specialized scenes.

### What devices is MidiFire compatible with?

MidiFire supports all CoreMIDI hardware interfaces, network interfaces, virtual ports from other apps, and Bluetooth MIDI. It is available on iOS and also has a compatible version for macOS, with interchangeable scene files between platforms.

### How can I create custom MIDI processing rules?

The Stream Byter module allows you to write your own processing modules using textual rules. It supports constructs like IF/THEN, variables, mathematical functions, and sending arbitrary MIDI data, making it highly flexible for advanced users.

## Version history (last 5 releases)

### 2.1 — 2020-02-11

- better handling of code pasted from websites/emails
- fix for some plugins not being shown in list
- stability fixes

### 2.0 — 2019-10-25

Version 2.0 is finally here and brings AUv3 hosting with some unique twists:
- hosting of AUv3 MIDI effects in a modular paradigm
- AUv3 MIDI effects can be uniquely hosted at ZERO latency
- sync AUv3 MIDI effects to external/internal MIDI clock

Other updates:
- latest incarnation of the StreamByter language; defines, subroutines, long form rules
- able to create up to 64 virtual MIDI ports
- support for Files app and split view
- Channel Strip - can be configured to block when bypassed
- New 'Stern' holdover handling mode

and many, many fixes and other improvements

### 1.15 — 2018-07-24

- Event Monitor; wallclock/relative timestamp option
- Stream Byter; improved timing of +D with +I flags
- Fix Stream Byter autobreak bug

### 1.13 — 2018-07-13

- Event Monitor module now can be bypassed (remotely controlled too)
- fixed Stream Byter autobreak from kicking in when it shouldn't

### 1.12 — 2018-06-28

important but small fix - prevent crashing if attempts are made to load a scene (usually via MIDI) if a scene is already in the process of being loaded.

## Apps similar to MidiFire

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Midiflow](https://appshunter.io/ios/app/midiflow/id879915554) | 4.0 (39) | $7.99 | Music |
| [Mini Orchestra](https://appshunter.io/ios/app/mini-orchestra/id6444086798) | 4.9 (8) | $19.99 | Music |
| [iMIDIPatchbay](https://appshunter.io/ios/app/imidipatchbay/id622204114) | 4.2 (18) | $14.99 | Music |
| [Mozaic Plugin Workshop](https://appshunter.io/ios/app/mozaic-plugin-workshop/id1457962653) | 5.0 (81) | $1.99 | Music |
| [MidiMixer for AUM Auv3 Plugin](https://appshunter.io/ios/app/midimixer-for-aum-auv3-plugin/id1542209150) | 4.7 (26) | $9.99 | Music |
| [mLFO](https://appshunter.io/ios/app/mlfo/id1602306976) | 4.5 (20) | $5.99 | Music |

## More apps by Audeonic Apps

- [FreEWI](https://appshunter.io/ios/app/freewi/id485711674)
- [MidiBus](https://appshunter.io/ios/app/midibus/id648856167)
- [GigRig MIDI+](https://appshunter.io/ios/app/gigrig-midi-plus/id1090436811)
- [StreamByter](https://appshunter.io/ios/app/streambyter/id1398712641)
- [mfxConvert](https://appshunter.io/ios/app/mfxconvert/id1451192046)

All apps by Audeonic Apps: https://appshunter.io/developer/351607509

---

*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 2026-08-21.*