Tiny app to vibrate when a call is answered and/or has ended.

Tested:
* Phone (com.android.dialer)
* Google Phone (com.google.android.dialer)
* Simple Dialer (com.simplemobiletools.dialer)

Permissions:
* NOTIFICATION_LISTENER - scan for a call answer or end
* VIBRATE - notify when a call is answered or has ended

It is Free Open Source Software.
License: GPL-3