FormKey 4+

The Intuitive MIDI Controller


    • 4.3 • 6 Ratings
    • $2.99

iPad Screenshots


Introductory Offer! For the launch of version 1.0 we're offering FormKey at a discount. Purchase now & lock in to the future of mobile music creation!

FormKey is the first MIDI Controller that makes you a better musician as you use it. Utilizing shapes to define notes and colors to define octaves, FormKey's beautiful isomorphic keys aid in pattern recognition and makes discovering new chords easier than it's ever been.

This is a MIDI Controller focused on playability and ease of use, but we're just getting started. Download now to lock into all future updates. We're going to make something truly special and unique. We want to give music to everyone.

What’s New

Version 1.0.2

- Added Dark Mode
- Minor bug fixes

Ratings and Reviews

4.3 out of 5
6 Ratings

6 Ratings

OroroMonroeX ,

Something Different

This is awesome! You can tell that this app is in it’s early stages but what’s here so far has really good design and aesthetics. It’s kind of early to tell but this maybe my favorite playing experience on the iPad. Can’t wait to see where this goes.

whyshouldi? ,

Hope for the future...

First, I couldn’t connect it to any of my iOS synths, then I could, then I couldn’t get it to connect to a synth in AUM, then I could (but it doesn’t have AUM support so you can’t see it but you can connect by using ‘AUM’ Destination). Can’t get it to show up yet in Cubasis, Nanostudio, apeMatrix, - don’t know about GarageBand. I presume it has midi record because of the controls, but they don’t seem to work.
There is much more information they need to provide upfront from my point of view. They should of put it on TestFlight as a beta and work with the feedback there. I’ll be checking and testing it various apps ( I got it to work with the Midi Rotator app ?!).

Developer Response ,

Hi there! Thanks for your feedback! Formkey in its current state is designed more for use with DAWs like Logic, Reason, and Live. The transport controls are designed to be used in those DAWs as they do not have built in recording functionality as of now. But we are working on a lot of the functionality suggested here. Thanks again.

/blee/ Brian Lee ,

Great Design

I look forward to more updates, great app

App Privacy

The developer, Polyhedra, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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