This Applet monitors a Google Calendar you choose and every time a meeting on that calendar ends, your Android device's ringtone will turn back on. Use this complimentary Applet to turn the ringtone off: https://ifttt.com/applets/fVqcejHy
If
Any event ends
This Trigger fires within 15 minutes of the ending time of an event on your Google Calendar. Note: The time in the ingredient will be based on the timezone set in Google Calendar.
Fewer details
ID ShzmBfSN
Explore more great ways to automate Google Calendar and Android Device