Why? Because it's easy to lose your fitness tracker!FindMyBlue designed to help locate missing Bluetooth LE (low energy) devices, such as the Fitbit, Jawbone, PhoneHalo and others. This app will approximate the distance and emits an audible 'ping' sound as you get closer and farther from the device.Devices must be Bluetooth 4.0 Low Energy! It will NOT find 'classic' 4.0 or older devices (most headsets). It will also NOT be able to effectively track 'secure' devices that randomize their address. They can be displayed, but, each 'ping' will display as a new device. Your device needs to have power and be within range (typically 30 feet). Known Compatible Devices: Fitbits (Force, One, Flex, Zip) and Jawbone UP24It will likely detect other devices, but, no guarantees.