If you are doubting to buy this scale because the price seems very cheap compared to branded scales (Fitbit etc), then don’t worry. To use Just download and setup the app and you are ready to use your scales. Open the app and then stand on the scales see real-time weight on the app. After waiting 1-2 seconds the measurements are locked in and if you have an Apple device the details are sent to you apple Health. The whole family has been using for the past 3 months and it hasn’t disappointed. Would highly recommend.