I have actually never shared my location, so no idea what features one might want for that, but this one is open-source, so relatively trustworthy: https://f-dr

I have actually never shared my location, so no idea what features one might want for that, but this one is open-source, so relatively trustworthy: https://f-droid.org/app/ca.cmetcalfe.locationshare https://f-droid.org/app/ca.cmetcalfe.locationshare