Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To download the free app MIDI Wrench by Christian Schoenebeck d/b/a Crudebyte, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

MIDI Wrench

By Christian Schoenebeck d/b/a Crudebyte

Open iTunes to buy and download apps.


The Swiss army knife for your daily MIDI setup tasks. Connect a MIDI keyboard, MIDI sound expander or any other MIDI device to your iPad, iPhone or iPod touch by using the Apple USB camera adapter or any other adapter supported by Apple. Visualize MIDI messages sent by the connected MIDI device or send MIDI messages to the connected MIDI device. This is a simple but helpful tool to find problems in your MIDI setup or simply to spot what kind of messages various MIDI devices are sending exactly.

This app supports the "JACK Audio Connection Kit" for MIDI connections from/to other audio apps!

Current Features:

- Lists all CoreMIDI devices on your iPad / iPhone / iPod touch.
- Displays incoming MIDI events.
- Send MIDI Note On, Note Off and certain Control Change messages by using the virtual MIDI keyboard, buttons and rotary knobs.
- The virtual keyboard keys, rotary knobs and buttons reflect the states sent by the connected MIDI device.
- JACK MIDI support.

This app is free, and it does not contain any ads or other annoying things. Really!

Anti-Spy Commitment: We take your privacy very seriously. None of our apps contain so called „spy” behaviors and we committed ourself to a very high privacy standard. MIDI Wrench does not collect any informations. For more informations about our privacy commitment, read our „Privacy Policy for Mobile Apps”.

What's New in Version 1.1.5

- iOS7 fix: MIDI monitor section became white on incoming MIDI events.


iPhone Screenshot 1
iPhone Screenshot 2
iPad Screenshot 1
iPad Screenshot 2

Customer Reviews


I didn't imagine myself ever needing this I saved hours of trouble shooting running this app..very cool

Works great

But I wish the type was larger. Nice job, thanks!

Awesome App!

It works!! Helped me diagnose a midi issue I had!!

MIDI Wrench
View In iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Music
  • Updated: Jan 17, 2014
  • Version: 1.1.5
  • Size: 5.5 MB
  • Language: English
  • Seller: Christian Schoenebeck d/b/a Crudebyte

Compatibility: Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

Current Version:
All Versions: