Bought this to support my newly turned lose-weight-get-fit leaf. But what a mistake. Everything already noted in other low starred reviews applies here. I bought this brand and model because it was reviewed highly in a consumer technology magazine. They got the unit that worked. I got the one that performed like all the other 1 star reviews. It was: impossible to set up. It couldn’t distinguish between users; it refused to set its mode to weight plus BMI plus % fat etc; kept saying ‘save error’; reported differing weights between the unit and the app - a difference of several pounds, so not a decimal point error; would not let me weigh myself when I tapped my name - I’d step on it and it would revert to guest; and each time I stepped on and off (you’ll do a lot of that with this device) to recalibrate the settings it told me I’d lost weight by several pounds or gained it. I could go on. In the end I wanted to punch that green smiley winking bastard emoji face. Instead I packaged it back up to return it and ate a cream cake.