Fitbit Flex 2

While the Fitbit Zip tracked steps most accurately and was our tester’s favorite, for highly accurate tracking across all metrics, the Fitbit Flex 2 is your best choice. You can adjust your stride length for even more accurate tracking, and use the app to set personalized goals. This Fitbit pedometer is waterproof up to 50m, lightweight and provides reminders to get up and move as well as call and text notifications from your smart phone.

Pros: Across all metrics tested, the Fitbit Flex 2 was consistently most accurate: for steps it was only 25 off for every 2,500 we took, and for every mile walked, it was off by about 0.1 miles, which was more accurate than the Zip, but less accurate than the Nokia Go. The Flex 2 is waterproof up to 50m, so you can shower and swim without taking it off. Like all Fitbits in our testers’ experience, the device is intuitive to use and the Fitbit app the best on the market.

Cons: This pedometer doesn’t have a screen, so you’ll have to check the app for metric specifics, but it does have LED lights that indicate how close you are to your daily goal. The battery also only lasts 5 days, which is less than many others we tested, but it recharged very quickly in about the time it takes to shower and get ready in the morning.

Bottom Line: The Fitbit Flex 2 is one of the best pedometers because it’s accurate, easy to use, and backed by a powerful and useful app.

Best for: Casual use up to hardcore training; water-related sports and activities

Key Attribute: Accuracy