Free TrackR app download, compatible with iOS & Android. Buy 2, get 1 free with the value 3-pack. TrackR uses Bluetooth technology to find items at close range—up to 100 feet away. Use the TrackR app to ring your device, now with flashing LED lights to help you find it fast Replace the battery, not the device – for free. The app will notify you when the battery is running low. Order a replacement directly from the app See where you last had your keys, wallet, laptop – on a map. TrackR's globa