If you're wondering 'which is the best Fitbit for me?' we feel your pain. The line-up is getting quite crowded right now with Fitbit's first smartwatch nearing on the horizon as well. Short of really serious athletes, there's definitely something there for everyone. Whether you're male, female, lazy or active, there's a Fitbit to suit you.
With a price range from $59.99 right up to $249.95, Fitbit has done its best to cater to everyone looking to buy their very first fitness tracker.
Essential reading: How to use your fitness tracker to actually get fit
Read on to find out which Fitbit model is right for you. We've spent plenty of time with the whole range to help you decide, so make sure you check out our full Fitbit reviews too.
Best for detailed metrics
Fitbit Charge 2
With the Charge 2, there's a wealth of new features including guided breathing, interchangeable bands, a larger screen and new data tracking with VO2 Max. If you want basic step/sleep tracking, it's there, but if you want to take things further, you can.
Read this: Fitbit Charge 2 tips and tricks
The Cardio Fitness Level feature is one of our favourite additions. It's a proper fitness metric that's new to the company's ecosystem – and one that we hope to see evolve over time to become even more useful. The Charge 2 also offers a guided breathing exercise, making sure you're not inhaling too deeply or exhaling too quickly.
The size of the display on the Charge 2 is just right and the device sits better than the Surge does on the wrist, which is a relief. The overall design is oddly pleasing, perhaps because the display is larger than the Alta HR's but still smaller than the Surge, which means you get to see a little more information without it being uncomfortably big.
An update back in December last year also added some much-asked-for features including workout pause, a battery indicator, viewable heart rate zones, new clock faces and vibration support for Fitbit's guided breathing.
Feature check: Heart rate, VO2 Max, ConnectedGPS, auto exercise detection, steps, sleep.
Wareable verdict: Fitbit Charge 2 review
Best smartwatch alternative
Half smartwatch, half fitness tracker, the Fitbit Blaze offers heart rate data and built-in workouts all on the wrist. Designed with customisation in mind, you can switch the screen element in and out of different style bands.
Read this: Fitbit Blaze tips and tricks
Gym bunnies will approve of the automatic exercise detection, biometrics and the FitStar support to walk you through calorie-busting workouts. It's disappointing for runners and cyclists as it still relies on your smartphone for GPS data.
An update brings the cardio fitness levels and guided breathing features from the Charge 2 to make the hybrid a more feature-packed option. You also get Sleep Stages, which tracks how long you spend in light, deep and REM sleep. That's currently only available on the Blaze, Charge 2 and Alta HR.
Feature check: Heart rate, guided workouts, exercise tracking modes notifications, steps, Sleep Stages, ConnectedGPS.
Wareable verdict: Fitbit Blaze review
Best for style
Fitbit Alta HR
The Fitbit Alta hasn't been ditched but if you want more features from this stylish tracker, you should check out the Alta HR.
Essential reading: Fitbit Alta HR tips and tricks
Its big new feature is continuous heart rate tracking. It's also the debut device for Fitbit's improvements in sleep monitoring, using the accelerometer and heart rate sensor to determine whether you're in REM, light or deep sleep. Every morning you can see how long you spent in each stage, and the app offers up some tips for rest from Sleep Insights. We've found the insights a little general thus far, but Fitbit says these will get better the more it gets to know you.
Despite those improvements, the Alta HR is still trying to keep things simple. There's no workout recording, ConnectedGPS, VO2 Max tracking or, surprisingly, guided breathing. It does still have SmartTracking, so if you do want to take it for a run, it'll pick it up. And of course, it has that tiny Alta screen that displays incoming calls, SMS notifications and calendar updates.
The Alta HR is still Fitbit's most stylish tracker. It's not for serious athletes, but instead for those of us who want to keep track of our health, fitness and wellbeing without all the complicated stats. It wants to give us that in a form factor that's wearable and desirable, and to that end it's a success.
Feature check: Steps, Sleep Stages, screen, SmartTrack automatic exercise detection.
Best for swimmers
Fitbit Flex 2
In terms of tracking the Flex 2 covers the bases; monitoring steps, calories, active minutes, hourly activity and sleep. You also get the benefit of Fitbit's SmartTrack tech to automatically recognise and track workouts, including walking, running, cycling and aerobic workouts.
Read this: Fitbit Flex 2 tips and tricks
The Flex 2 is 30% smaller than the original, but the real story here is that this is the wearable tech heavyweight's first swim-proof tracker. With its new water-resistant design, you get swim tracking features, letting you automatically track pool sessions and delivering metrics on laps, duration and calories burned.
Feature check: Steps, sleep, swim-proof.
Wareable verdict: Fitbit Flex 2 review
Best for runners and cyclists
The Surge is still the priciest Fitbit you can buy and was originally billed as the company's sports super watch. That's harder to build than it sounds but the Surge is still worth a look if you want GPS for running routes (though its accuracy is debatable) as well as everyday activity tracking. It has a 5 ATM water resistance rating, though Fitbit advises against wearing it in the pool.
Essential reading: Fitbit Blaze v Fitbit Surge
A few more biggies that the Surge alone enjoys are music control and text notifications as well as Caller ID. Music is only during workouts but still might sway you over one of the other trackers.
Feature check: GPS, running and cycling modes, notifications, steps, sleep.
Wareable verdict: Fitbit Surge review
A bit of a retro tracker but still a popular device, the One is now the same price as the Flex 2, which is odd. It differs by coming in a clip-on form factor, handy for bras and suchlike. It also has a clock and, like the Charge, offers elevation tracking.
Read this: Fitbit is working on sleep apnea devices
Sleep tracking is on board, but with no automatic detection, and there are no extras like automatic exercise detection either. It will work with Fitbit's Sleep Schedule mode though. You get the same app and steps/distance tracking for a nice price in an inoffensive device. It's a bit fugly, but the OLED shows you fitness stats. Plus the battery life is a winner at ten days or more.
Feature check: Steps, time, sleep (not-automatic), 10-day battery.
Best for simplicity
The budget option of the line-up, the Fitbit Zip is pretty basic next to all the trackers above. So what do you get? As with the rest, the Zip will track your steps, calories and distance as well as telling you your active minutes for the day. There's no sleep tracking and no altimeter to record elevation. There is a clock function on the small display, and it also wirelessly syncs to your phone and comes in some funky colours.
Sweat, rain and splashproof with a whopping six-month battery life, the Fitbit Zip is well worth a look although it's got stiff competition from the Misfit Flash, the Jawbone UP Move and the Withings Go.
Feature check: Steps only, 6-month battery life.
Best to save money
While Fitbit stopped selling the original Flex, you can still find it on Amazon. And while you won't get the waterproof design, this model still offers good value for money. The Flex is the oldest wrist-based tracker of the lot and offers accurate tracking, handy light notifications and between five and seven days' battery life.
Read this: A beginner's guide to Fitbit's ecosystem
If you're looking to save money and you only care about tracking – no clock, no Caller ID, no messages – then the Flex is a good shout. It still offers sleep tracking and a silent alarm. It's also handy if you don't like Fitbit's style, because you can buy a Tory Burch accessory to completely cover it up.
Feature check: Steps, sleep, five-day battery.
Wareable verdict: Fitbit Flex review