A:Answer Hi, Monique. The Fitbit app is compatible with most popular phones and tablets, even if the device is on a preplan payment. To set up and use your Fitbit products and services, you must install the Fitbit app on a compatible device running Android 9 or higher or Apple iOS 15 and higher. For any additional questions and concerns, feel free to reach out through phone, chat, social support, or through our community forums: contact.fitbit.com