It's a little bit of configuring, but it sounds like OwnTracks can do exactly that. You can deploy the recorder container wherever you like and then post / shar

It's a little bit of configuring, but it sounds like OwnTracks can do exactly that. You can deploy the recorder container wherever you like and then post / share locations to it from iOS/Android apps, as well as see the last location posted by others on the same instance. Enabling / disabling sharing on the app is a single button press. (I help maintain the OT Android app)