The Fitbug comes with one free month of online coaching; sync the device with newer iPhones and iPads to get personalized exercise and nutrition tips. If you like this optional service, you can continue it for $3.99 a month.
What it tracks. Steps, flights of stairs climbed, calories burned, and sleep cycles
How it motivates. Unlike a pedometer, this gadget senses altitude, so you'll get credit for climbing stairs. You can also use the device to monitor your sleep and find patterns that show when you're getting the best shuteye.