The BT Pedal Editor is an application for Positive Grid BT-4 and BT-2 Bluetooth MIDI Footswitch.

Positive Grid BT pedal allows you to control your mobile guitar effects, keyboard presets and music sheets - all wirelessly. It features a solid, stage-ready controller that gives you the freedom to play and create new music using your iPhone and iPad apps. It works wirelessly with thousands of music apps including BIAS FX, JamUp, GarageBand, Loopy, OnSong and any iOS app that supports CoreMIDI.

- Control your guitar effects, music sheets and keyboard presets all wirelessly!
- Solid, stage-ready controller that gives you the freedom to control your iPhone and iPad apps.
- Turn your BIAS FX into a full-fledged guitar amp-and-effects powerhouse.
- Works wirelessly with thousands of music apps including BIAS FX, JamUp, OnSong, GarageBand, Loopy—most any iOS app that supports CoreMIDI.
- Unique metal case and rock-solid design withstand the harshest and toughest conditions on the road.
- Fully customizable with the companion BT Editor app, creating at-the-ready banks and presets.
- The BT pedal is best of breed: ultra-responsive, compact, durable and easy to use.

For more information, please visit:

What's New

Version 1.0.6

This update fixes the duplicate MIDI message issue.

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Ratings and Reviews

Good App and hardware, poor documentation


I recently purchased the Positive Grid BT-4 pedal and downloaded the app on my iPad Air 2. No problem connecting the pedal to the app, and using the pedal to control BiasFx worked fine. I also wanted to use the pedal to control the Loopy app and there were some brief instructions on configuring the pedal on the Positive Grid website. I was eventually able to get it to work, but using the instructions caused a significant delay between pressing a switch and Loopy responding. Eventually I was able to figure out how to fix the problem. I then discovered that after I exited the app and restarted that my configuration changes were gone. Only after much fiddling did I discover that it was necessary to select the check mark on the upper right of the configuration window to actually save your info. Similarly I discovered that you can rename or delete a bank by swiping it to the right. Neither of these were documented anywhere I could find. I would give this five stars if the documentation were more complete including all of the controls in the app and information on which midi messages are sent and when ( button down or button up?, etc)

Developer Response

Hi, Thanks for the feedback! Would you like to write us on We can actually provide you more info with our support service!

I want to like this


The idea is great but the execution isn't. Biggest problem I have is that no changes to the user bank settings ever save. I've modified the midi control settings countless times using positive grid's own BT-4 pedal. When I turn off the pedal and then try to use it again, all of my reconfigured settings are lost. It's useless as a performance tool with multiple user banks if it doesn't actually save user settings. I don't have time to reconfigure before each gig. There are no helpful hints or manual pages that describe anything that I'm doing wrong either. So it's a fail on two different levels.

Developer Response

Hi, Thanks for the feedback! Would you like to write us on, and tell us more about your opinions? We hope to hear back from you!



I hate to write this because I prepaid for it and waited months for it. I'm using an iPad 3 and a mission engineering EP-1 expression pedal all going in to jamup pro.
For me, it is totally unusable. The connection cuts out every minute or so when controlling the Wah pedal. Also, there is no power plug supplied (nor is their a DC in jack) and the batteries required only last around 10 hours at best. There is a tiny bit of latency in toggling stomp boxes which is not a deal breaker but it is noticeable. Also, I am having trouble getting my user presets to save. They get lost every time I connect to a different device, so unless you are happy with their presets, you have to reprogram yours every time.


Positive Grid Inc
15.1 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Japanese
Age Rating
Rated 4+
© 2015 PositiveGrid Inc


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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