# MIDISpy — MIDI Monitor

> MIDI monitor utility with filtering and multiple connectivity options. (iPhone/iPad app by Kai Aras.)

- Source: https://appshunter.io/ios/app/midispy/id1444652196 (this page in markdown: same URL + `.md`)
- Developer: [Kai Aras](https://appshunter.io/developer/370820899)
- Category: Music
- Price: Free
- Rating: 4.00/5 from 4 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 6 MB
- Languages: American English
- Released: 2019-01-11
- Data updated: 2026-07-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/midispy/id1444652196/reviews.md

## What is MIDISpy?

MIDISpy - MIDI Monitor 

A handy little utility for monitoring MIDI connectivity. 

Overview:
- Standalone and AUv3 support
- Basic Filters for Note, Control Change, Clock and SysEx messages

Connectivity:
- Inter-App MIDI
- USB MIDI
- Bluetooth MIDI
- Network MIDI
- AUv3 

Requirements:
- iOS9+

## Key features

- Standalone and AUv3 support
- Basic message filtering
- Inter-App MIDI
- USB MIDI
- Bluetooth MIDI
- Network MIDI

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/midispy/id1444652196/reviews.md

### 3/5 — Not working in AUM at the moment

*2026-04-26, version 1.0.3*

Both MIDISpy and KB-1 don’t show up in the AUV Extension list anymore for me, I can’t see them so I can’t load them in AUM. Both still work standalone

### 5/5 — Little tool but does the job, and it‘s free!

*2025-11-02, version 1.0.3*

Saved my day while debugging a nasty MIDI feedback loop in my mioXM setup. There‘s also ShowMIDI by Uwyn which offers more configuration options, but sometimes a scrolling log of all MIDI messages, Like offenes by MIDISpy, is just better.

### 5/5 — Very useful tool!

*2025-02-19, version 1.0.3*

Thank you very much! 😊

### 5/5 — Super useful!

*2022-05-19, version 1.0.3*

This is the perfect tool to diagnose erratic midi controller behavior. 
Thank you so much! Please keep up the good work, and keep this tool alive.

### 1/5 — Bluetooth Support Non Existent

*2021-04-18, version 1.0.3*

Everytime I try to connect Bluetooth midi app crashes. Using an airturn quad200, but I don’t think it’s the device because the menu isn’t even coming up. Tried closing every other app, everything. Please fix because this app is so important for what it does.

### 5/5 — Worth every penny!

*2021-03-31, version 1.0.3*

I need to see MPE Midi streams across a WiFi network and using my iPad Pro with MIDISpy is great. Very reliable as a stand-alone app, or as a plugin in AudioBus, AUM or as a AUv3.

Would like to see an option to save output but I can copy and paste so it’s not a big deal. 

I really hope you port all of your apps to macOS. Please always make sure that MIDI over WiFi is solid on your end, (I’m sure that’s mostly up to the OS), and support MIDI 2.0 and MIDI.org standards. I rely on this for my living. 

👍🏼👍🏼

### 5/5 — 5 stars and even a little bit more maybe...

*2020-11-27, version 1.0.3*

Kai, this is the best midi monitor I have seen on iOS (well.. iPad OS), PLEASE bring it to the iOS system too! I would love this on my phone.

## Frequently asked questions about MIDISpy

### What devices does MIDISpy support?

MIDISpy is designed for iPad devices and requires iOS 9 or later. It was last updated on March 30, 2020, with version 1.0.3.

### How does MIDISpy handle MIDI messages?

MIDISpy provides basic filtering capabilities for Note, Control Change, Clock, and SysEx messages, allowing users to focus on specific data streams.

### What types of MIDI connections can MIDISpy monitor?

MIDISpy supports a wide range of MIDI connections, including Inter-App MIDI, USB MIDI, Bluetooth MIDI, Network MIDI, and AUv3.

### Does MIDISpy have ads?

No, MIDISpy does not contain advertisements. It is a free utility with no in-app purchases or ads.

### What is the user rating for MIDISpy?

MIDISpy has a user rating of 4.0 stars based on 4 ratings. This indicates a generally positive reception from its users.

### Is MIDISpy suitable for beginners?

With its straightforward monitoring and filtering features, MIDISpy can be a useful tool for beginners learning about MIDI connectivity on iOS.

### When was MIDISpy last updated?

The latest version of MIDISpy, 1.0.3, was released on March 30, 2020. The app was initially released on January 11, 2019.

## Version history (last 4 releases)

### 1.0.3 — 2020-03-30

- Fixed an issue where Active Sensing messages would show up as Note messages with no way of hiding them

### 1.0.2 — 2019-02-04

- Fixed an issue where channel numbers would not be recognized properly in some cases

### 1.0.1 — 2019-01-14

- Added an option to clear the display 
- Optimised text drawing and layout 
- Fixed layout issues when using the app in split-screen or slide-over mode 
- Fixed an issue where tempo and transport related events would not be logged 
- Improved overall performance

### 1.0 — 2019-01-10

No release notes.

## Apps similar to MIDISpy

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [UxMIDI Tools](https://appshunter.io/ios/app/uxmidi-tools/id1632044346) | 4.0 (1) | Free | Music |
| [Caramel - Crusher FX](https://appshunter.io/ios/app/caramel-crusher-fx/id883581594) | 5.0 (1) | $4.99 | Music |
| [bismark CtrlSlide – MIDI CC](https://appshunter.io/ios/app/bismark-ctrlslide-midi-cc/id1553855327) | — | $1.99 | Music |
| [Bluetooth Midi Motion](https://appshunter.io/ios/app/bluetooth-midi-motion/id1528246586) | 5.0 (1) | Free | Music |
| [midimittr](https://appshunter.io/ios/app/midimittr/id925495245) | 4.5 (50) | Free | Music |
| [Bluetooth Midi Keyboard](https://appshunter.io/ios/app/bluetooth-midi-keyboard/id1525362246) | 3.0 (4) | Free | Music |

## More apps by Kai Aras

- [MIDIBrute](https://appshunter.io/ios/app/midibrute/id1010753735)
- [RP-1 Delay](https://appshunter.io/ios/app/rp-1-delay/id1079530569)
- [RF-1 Reverb](https://appshunter.io/ios/app/rf-1-reverb/id1097763239)
- [VC-1 Chorus](https://appshunter.io/ios/app/vc-1-chorus/id1130683829)
- [Italizer](https://appshunter.io/ios/app/italizer/id1133091743)
- [VOLT Synth](https://appshunter.io/ios/app/volt-synth/id1185984394)

All apps by Kai Aras: https://appshunter.io/developer/370820899

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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 2026-07-09.*