You can walk 20,000 steps a day, but if you’re munching a Mars Bar while you do it, you are unlikely to shed many pounds. Smart scales are going to help here. Like Fitbit’s Aria scale the iHealth Wireless Body Analysis Scale does more than weigh you and report back to the app. UPDATE: The iHealth Body Analysis Scale has now been replaced by the iHealth Core – read a review of the iHealth Core in our Best Smart Scales reviews round up. It also measures BMI, and calculates body fat indices, lean body mass, muscle mass, bone mass, water mass and your visceral fat rating. With such data you can tell how all that extra exercise is affecting your general fitness. It’s part of the iHealth family of fitness and medical gadgets including the iHealth Edge activity tracker and iHealth Wireless Pulse Oximeter. And no one needs instructions about how to use some bathroom scales. Connect to your iPhone/iPad or Android via Bluetooth. You use the scales with the iHealth MyVitals app. Step on the scale and it will read your weight, then display your Body Fat percentage. The iHealth app will then show detailed body composition data including weight, body fat, lean mass, body water percentage, muscle mass, bone mass, visceral fat rating and daily calorie intake (DCI). Up to 20 people can use the scale; it should automatically recognise you via your previous recorded weight. Simon was Editor of Macworld from the dark days of 1995 to the triumphant return of Steve Jobs and the launch of the iPhone. His desk is a test bench for tech accessories, from USB-C and Thunderbolt docks to chargers, batteries, Powerline adaptors and Fitbits.