Keyfecto app helps you to learn circle of fifths keys - you can customise keys you want to practice, use MIDI keyboard to improve your piano skills and track overall progress.

On the main screen there is a circle of fifths keys, select any of them to start training and press play button.

In a training mode app provides you with convenient hints on which keys to play. Practice using iPhone touch display or on a MIDI keyboard attached to your device. Once you feel comfortable with playing particular key - turn off hints and play keys from your memory. You can stop training at any time.

That’s it. App is very straight-forward and easy to use.

You can change minor scale and turn on piano note captions in application settings.