MIDI Loupe 4+


    • 2.8 • 9 Ratings
    • Free



MIDI Loupe now supports macOS 11 Big Sur and runs native on Apple M1 devices.

MIDI Loupe allows you to monitor and log MIDI messages from one or multiple MIDI devices. It is mostly useful for debugging and testing your MIDI setup, if something goes wrong.

Every registered MIDI Source is listed and has a separate color, so you can easy differentiate between the messages. In the device list you can select/deselect the devices for logging.
You can save the logs to disk and also load them for later inspection.

Please also look at http://www.gfApps.com for more informations.

What’s New

Version 1.6

- adds support for Big Sur
- works on macOS 10.9 up to macOS 11
- adds support for Apple Silicon (M1) cpu
- supports dual binary Intel and Apple cpus
- user now can switch between note, decimal or hexadecimal values in the monitor view
- bugfixes

Ratings and Reviews

2.8 out of 5
9 Ratings

9 Ratings

chrisrimple ,

Works well on High Sierra

It’s working well for me on High Sierra with an iConnect Mio usb-to-MIDI interface. I tested with two MIDI devices, a Rock Band 3 Wii Keytar and a Yamaha P-80 Electric Piano. Both devices are sending a continuous stream of unnecessary messages, which is annoying - the Yamaha sends an “[RT Clock]” update every few milliseconds, which fills the app message window with MIDI messages that I don’t care to see. That leads me to a feature request: provide a way to filter out undesired messages, using string matching or similar. Similarly, allow “unknown” messages to be hidden, so that the user only sees messages that can be identified by the app.

jack382 ,

Doesn’t run on High Sierra

Reinstalled multiple times but every time it won’t even start.

Wisdarch ,

Just what I was looking for

People seem to have had issues with High Sierra since the last time this was updated, but I'm running Mojave and I haven't had any issues.

App Privacy

The developer, gfApps.com, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More