Pathshare: A way to share your location with others in real time
You can select multiple people with whom to share location with. Or you could have someone simultaneously track a group of people.

The difference here is, you can select multiple people with whom to share location with. Or you could have someone simultaneously track a group of people. To avoid any privacy issues, you set a duration for which you want to share your location. Some of the options available include the ability to broadcast your speed, get voice notifications (when someone arrives at a location) and set geo fences (to get notified if one of the participants leaves a certain area).
Could be quite useful in many scenarios and it’s completely free too!
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