Home Remote app. Find my friends, WiFi detection. All have their disadvantages, multiple apps, background location impacting battery.
With shortcuts recently this was possible but required some basic scripting and clicking approve each time the shortcut ran.
Now with Domio it’s as easy as setting up a basic automation. As this triggers from your iPhone’s knowledge of location it doesn’t need Domio to have location tracking on or run in the background.
In shortcuts app create a new automation

Select leave or arrive and Run Immediately

Then select New shortcut and search for Domio and select Set Variable, or your choice of action.

Choose the variable name and set to the relevant value.

Now turn off all the complicated location logic you have setup.
.