295 reviews
Content rating
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About this app

The USB MIDI Monitor lets you view all incoming MIDI events from your USB MIDI interface. The events are timestamped and the event type, MIDI channel and values are displayed in a scrollable table. For control changes, extra information is displayed if the control change is a known type like volume or panning.

Note that this app requires the following items:
* Android 3.2 or higher
* Tablet or phone with USB host support
* USB MIDI interface that works without drivers on Windows or OSX
* If your device has a micro-USB connector: a micro-USB to USB OTG cable (around 7 to 10 euro)
* No rooting or special drivers required!!

Tested Android devices:
* Allwinner A13
* Sony Tablet S
* Acer Iconia A200
* Acer Iconia A500
* Asus Transformer Prime TF201
* Asus Transformer TF101
* Asus EEE slider
* Sony XPeria S (with Android 4 update)
* Galaxy Note 10.1
* Galaxy S3
* Galaxy S4
* Galaxy S5
* Intenso 824
* Nexus 10
* Toshiba Excite

Tested USB MIDI interfaces / devices:
* Cakewalk / Roland UM-1G
* CME M-Key V2 Midi Keyboard
* Denon MC-6000
* Edirol UM-2EX
* EMU Xboard 61
* The 5 euro 'Hong Kong' interface (note: this one drops MIDI events if they are coming in too fast!)
* Korg Nanokey 2
* M-Audio KeyRig 49
* M-Audio Keystation Mini 32
* M-Audio Keystation 61
* M-Audio Oxygen II
* M-Audio Pro keys sono 61
* M-Audio MIDI One
* Roland HP302
* Yamaha Clavinova CVP-605

If you have more devices or interfaces that work, please drop me an email.
Updated on
Dec 31, 2013

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

230 reviews
Riley Brown (Goodintheory)
October 1, 2021
Works perfectly for the Novation Launchpad X, and helped me figure out some things for a macro system I was working on. Also, add S20 to the list of supported devices, because it seems to be working fine on mine. Honestly, the only way I could see this app being any better was if there was an option to see the raw hexadecimal and/or decimal of the message recieved.
18 people found this review helpful
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Will Britton
July 31, 2021
Needed a way to check/confirm midi data being transmitted from my korg nano controller. This worked easily and immediately. Thanks to the developer(s).
10 people found this review helpful
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Lloyd Kvam
September 27, 2020
Captures (logs) midi events. Unable to save events as a midi file. Only saves the time stamped log format. Works well for what it does.
17 people found this review helpful
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What's new

• More devices should now be supported
• Single MIDI bytes are now filtered
• The app does not start anymore when a MIDI device is connected. Make sure to attach your MIDI device before starting the app.
• No more ads
• No exit screen