Fitbit has been around for years, sitting at the top of its activity tracking class, smugly watching as its competitors hope to raise the same sort of brand awareness. For many, a fitness band is simply called "a Fitbit" - such has been the impact of this company - and it's now been bought by Google, to add to its power.
We've broken down each of the Fitbit trackers, looking at how much each costs, what features it offers and why you might consider buying each one. This list is all about helping you work out which Fitbit will suit you and your lifestyle best.
The Fitbit Inspire is the cheapest fitness tracker in Fitbit's offering, replacing the Zip, Flex and Alta. It offers all-day sleep and activity tracking, smartphone notifications, clock faces and interchangeable straps. It has a touchscreen display, is swim proof and it offers automatic exercise recognition too.
The Fitbit Inspire HR has a very similar design to the standard Inspire but it adds heart rate monitoring, more advanced sleep data, VO2 Max, Goal-Based exercise modes and Connected GPS. Other functions are the same as the Inspire, but it is a little more expensive due to the extra features.
The Fitbit Inspire 2 has a slightly more refined design compared to the Inspire and Inspire HR, offering many of the same features but doubling the battery life and adding Active Zone Minutes and Quick Replies for Android users.
The Fitbit Luxe is a fashion-focused tracker, offering a premium design and coloured touchscreen, along with all the same features as the Inspire 2. It also offers stress management and an SpO2 sensor, but there's no NFC and only Connected GPS.
The Fitbit Charge 4 has everything the Luxe does, but it adds NFC for Fitbit Pay, offers Spotify controls, has an altimeter and has built-in GPS, so it's better at accurately tracking workouts as a standalone device.
The Fitbit Versa 2 moves into smartwatch territory. It offers most of what the Charge 4 has, but it adds apps and built-in Alexa. There's no built-in GPS, but the Versa 2 has phone-free music.
The Fitbit Versa 3 is an upgrade to the Versa 2, adding Google Assistant as an option on top of Alexa, a built-in speaker for taking calls, Pure Pulse 2.0 heart rate technology and most importantly, built-in GPS.
The Fitbit Ionic is more sportswatch in its design than smartwatch. It offers built-in GPS, water resistance up to 50-metres, mobile payments and smartphone notifications, as well as all the features found on other Fitbit devices. No voice assistants though.
The Fitbit Sense is the all-singing, all-dancing Fitbit smartwatch with a number of sensors on board. It has everything the Versa 3 offers, along with an EDA sensor for monitoring stress, the ability to take an ECG and a skin temperature sensor.
The very best Fitbit trackers available right now #Fitness-trackers