So I lost my itty bitty Fitbit One in my huge 3 acre yard playing with my daughter. I had no idea where to start. Needle in the hay stack for sure. Of course it was dark and I had to find it before it died. I narrowed it down to a 3 foot square with this app. Then used a flashlight to find it. Well worth the 4.99!
Allison3371 about Fitbit Finder - lost Fitbit