With Phone Tracker, you can track the exact location of any lost Android device. That said, in order to see the location of your device, the app needs to be installed. This is what makes it especially appealing to create a network of users with different family members and friends. Basically, it's a good way to cover your back if you ever need it.
Logically, when you create a group of users with Phone Tracker, they all need to give their approval. You can send invitations to whoever you want, but anyone who's added to the group has to manually approve it from his/her own smartphone.
Phone Tracker is an interesting security app that can help you quickly find your smartphone if you ever lose it. You can also use it to help a friend or family member find their device as well.
Requires Android 4.0.3 or higher