App & Touch Controls
doppel works with a companion app. The app can be installed on a smartphone or tablet. Use the app to pick a rhythm, take your resting heart rate, and control your doppel.
doppel stores one rhythm at a time. But once set, you can leave your phone or tablet behind. You can then turn doppel on and off, adjust the intensity of the vibration, and check the battery - all using touch gestures.
Your doppel wristband syncs with the doppel app on your smartphone via Bluetooth Low Energy. Devices which support Bluetooth Low Energy include iPhone 4s or later, iPad (3rd generation) or later, iPad mini or later, iPod touch (5th generation) or later. For Android, please check your device's manufacturer. The doppel app is compatible with Android (5 or later) iOS (5 or later).