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MIDI Memo Recorder

By Line 6

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Please Note: The MIDI* record and play features of this free app require a hardware MIDI accessory from Line 6: a Mobile Keys 25 or Mobile Keys 49 keyboard, or a MIDI Mobilizer II or MIDI Mobilizer MIDI interface. For more information on these products and the many compatible MIDI apps, please visit

MIDI Memo Recorder simply records and plays any MIDI data - any time, any place. The app's streamlined design makes it quick and easy to store, find, recall, and even email any type of MIDI information - all your synth sounds, Line 6 effect patches, musical inspirations, and more. And with iOS version 3.2 and higher, MIDI files can also be transferred between your mobile device and your computer using iTunes File Sharing.

When the MIDI Memo Recorder app is used in conjunction with the MIDI Mobilizer II and MIDI Mobilizer hardware MIDI interface accessories, it's compatible with every single product equipped with standard 5-pin MIDI connectors. That means literally millions upon millions of keyboards, amplifiers, effects devices, and other types of audio gear throughout the world.

The MIDI Memo Recorder app also serves as the firmware updater for Mobile Keys keyboards, and for the MIDI Mobilizer II and MIDI Mobilizer MIDI interfaces. That means you can always get the latest firmware simply by updating to the current version of the MIDI Memo Recorder app and running it.

* "MIDI" stands for Musical Instrument Digital Interface, the worldwide standard for communicating musical performance data between musical devices, computers, and mobile devices.

What's New in Version 3.0.4

The Line 6 Mobile Keys 25, Mobile Keys 49, and MIDI Mobilizer II now officially support iPhone 4S and iPad (3rd Generation) through the firmware included in MIDI Memo Recorder 3.0.4. The included Mobile Keys firmware is now version 1.0.6, and the included MIDI Mobilizer II firmware is now version 1.0.4.


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Customer Reviews

When it works, it's excellent.

I use this with my mobile keys 49, and when it works, it's great. It is compatible with almost every great synth app out there, and is very stable and user friendly. Unfortunately, any time there is an iOS update, it completely stops working. This app almost never updates, and leaves the user to troubleshoot when hardware doesn't work. If this worked with every major mobile os, i would give them some slack, but issues should be resolved without making a user wait for 8+ months each time. It's very very frustrating.

Worked fine for me

I installed this app into my iphone 4 to use my new line 6 mobile keys 25. Out of the box it would not work with a 3rd party synth app saying that my device was not supported on my phone. I installed this app and updated the firmware and she works like a champ! Fast and easy. As far as the recording ability built into this app, it seems very vanilla and I don't expect to use it much.

Best thing since sliced bread

To someone with a twin tube rack mount that hasn't been able to remember its own name since I bought it over 20 years ago, the idea of a pocket device that I can dump and pull sysex data to is awesome. Now I can program the midi preamp however I want and not worry about the memory.

MIDI Memo Recorder
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Music
  • Updated:
  • Version: 3.0.4
  • Size: 2.8 MB
  • Languages: English, Japanese
  • Seller:

Compatibility: Requires iOS 4.2 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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