What is does someone get notified when you stop sharing location?

It depends on the specific app or service that you are using to share your location. In many cases, if you stop sharing your location, the person or people you were sharing with will receive a notification that you have stopped. However, there may be some apps or settings where the other person or people will not be notified when you stop sharing your location. It is always a good idea to review the settings and permissions of any app or service to understand how your location information is being shared and controlled.