In the case that an app hangs or freezes, exit and shut down the application from the Home screen of your iOS device. If you are still experiencing performance issues, it may be time to cycle the power on your device and restart it to clear out your memory of applications running in the background.

Please send any questions or requests to:
info@pulsecodeinc.com

Visit:
User Forum

Helpful links from Apple support:
Frozen or unresponsive iPhone
Application common issues – Restart iPhone

Download owner’s manual here:
Rhythm Studio
Digital Bass Line DB-303
BtBx