Why jot down your daily weight in a notebook when your scale can push it to your smartphone? Just step on Withings’ wireless scale – no timely calibration needed – and your weight is instantly measured, then transmitted via WiFi or Bluetooth 4.0 to your iDevice (Android coming soon). The scale also features a slick 0.78-inch (2 cm) thin profile, in-app BMI calculation, automatic recognition of up to 8 distinct users (privacy settings optional), and lasts upwards of one year on 4 AAA batteries.

Pick one up at Withings or Amazon – 130$.