With this app you can locate and find your bluetooth devices using the received signal strength indication (rssi), the closer you get, the stronger the signal will be. DOES NOT WORK WITH HEADSET. The devices will be displayed in a list with their: name, MAC id and a graphical signal strength meter (S Meter), and units in decibels dBm. Depending on the device the signal strength could be updated on 1-10 seconds intervals.

This app is specially recomend by Fitbit users. There is a Pro version available without ads and new features as one device selection.