Keyboard² app for iPhone and iPad

Keyboard² is a custom keyboard that enables you to play the keyboard on your iPhone & iPad!

[Function]
- You can enter numbers and mathematical symbols.
- You can enter the musical scales of ABC music notation.
- You can play sound.
- You can play a chord.

[Attention]
- You have to do the additional procedure of Keyboard² to use it. (Preferences -> General -> Keyboard)
- Then, you also have to turn on the "Full Access" for Keyboard².
* Please don’t worry - we do not collect your data at all.

[Support]
- Please do not hesitate to contact us for any defect reports or questions/requests.
- We will consider any requests for additional functions.