Best overall
Fitbit Charge 2
The Charge 2 strikes the right balance of style, performance, accuracy, features, and price.
The Fitbit Charge 2 is the best Fitbit for more people (and the best fitness tracker in general) because it does almost everything well, and is comfortable to wear for long periods of time. Not only does it improve upon its predecessor with a relatively high-density OLED display, but because it's not a touchscreen, it will operate properly when wet or sweaty. Its always-on heart rate sensor is accurate and doesn't eat into the battery, which, in our tests, lasted longer than the advertised five days.
Why the Fitbit Charge 2 is the best
I've often heard that people love their Fitbits — until they break or stop working. It's often something to do with the band or the charger or both, and with the Charge 2, Fitbit is addressing those two major issues.
The Charge 2 tracks steps, sleep, workouts, and food through its excellent iOS app, automatically adding them to the cloud through a sustained Bluetooth connection that, like the heart rate monitor, doesn't seem to negatively affect battery life. But the main improvements in the Charge 2 come from the replaceable straps, which range from sporty rubber to elegant leather and stainless steel, along with the much more robust claw charger — of which I was admittedly skeptical at first.
It also lasts more than the company's advertised five days of battery life, going as long as seven days in my tests. And while it's not totally waterproof, it never balked at my sweaty fingers or wrist after a workout, and a damp cloth cleaned the top and bottom of the core charger with no ill effects. And how 'bout those workouts? The Charge 2 accurately detected walking, running, and biking, and let me easily correct it when it couldn't tell my downward dog was a poor attempt at yoga.
For most people, the Charge 2 will be sufficient on its own, but for those who want to dress it up, the leather bands are lovely and not too expensive.
Best for athletes
Fitbit Ionic
At twice the price of the Charge 2, it's not twice as good, but it's an essential tool for athletes.
From notifications to payments and a few apps, Ionic has a beautiful OLED touchscreen that makes navigating a breeze, and tracking workouts even breezier. At $270 it's not cheap, and Fitbit still has a long way to go to mastering the smartwatch experience, but with a GPS radio, plenty of battery life, waterproofing, and personal coaching sessions, it's an excellent value.
Best for beginners (and swimmers)
Fitbit Flex 2
A fantastic entry into the fitness wearable world, and one of the best deals around.
The Flex 2 still doesn't have a display, but it is waterproof, allowing (for the first time) a Fitbit to be used while swimming. And then there are the standard features: step and exercise tracking; sleep tracking; reminders to move every hour; and automatic synchronization to an excellent iOS app, along with ample five-day battery. All it lacks is a heart rate monitor.
Best for fashion
Fitbit Alta HR
It's the same price as the Charge 2, but the Alta HR is much smaller and more attractive.
The Alta HR is sleek and attractive and fits in with any outfit. That's essentially how Fitbit is marketing the tracker next to the larger, more feature-filled Charge 2. The Alta HR gets a nice boost from the original thanks to all-day heart rate monitoring, but it also lasts over five days on a charge and arrives with a bevy of strap options, from leather to glamor, that keep it both unassuming and fashionable.
Conclusion
These days, there are no bad Fitbits. The company has overcome many of the hardware quality issues and software bugginess that plagued early models, and newer hardware like the Ionic prove that Fitbit can properly compete with the Apples and Samsungs of the world when it comes to smartwatches. But fitness tracking and guidance is still Fitbit's bread and butter, and no ecosystem does it better. The best Fitbit for most people is the Charge 2 because it does most things well but doesn't overachieve -- and it's affordable. The Flex 2 is stupid simple and lasts forever, while the Ionic has an overwhelming number of features.
Best overall
Fitbit Charge 2
The Charge 2 strikes the right balance of style, performance, accuracy, features, and price.
The Fitbit Charge 2 is the best Fitbit for more people (and the best fitness tracker in general) because it does almost everything well, and is comfortable to wear for long periods of time. Not only does it improve upon its predecessor with a relatively high-density OLED display, but because it's not a touchscreen, it will operate properly when wet or sweaty. Its always-on heart rate sensor is accurate and doesn't eat into the battery, which, in our tests, lasted longer than the advertised five days.
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