• Which Fitbit is right for me? Best GPS running watch: The best sports watches to buy today

Our quick take

Alternatives to consider

Apple Watch Series 3

  • Apple Watch 3 review

Fitbit Ionic - 4.0 / 5

An evolved Ionic design?

  • Small/large wristband size options 1.4-inch, 348 x 250 resolution display

What smartwatch features does the Fitbit Ionic have?

  • Now running Fitbit OS 2.0 3-axis accelerometer, 3-axis gyroscope, altimeter Fitbit Pay

  • Fitbit Pay: What is it and which banks are supported?

How good is it at fitness tracking?

  • Built-in GPS, built-in heart-rate monitor Water resistant to 50m for swimming/diving

Does the Fitbit Ionic have a genuine 5-day battery life?

How good is the Fitbit software?

  • iOS and Android compatible

Last but not least, the Friends tab allows you to add contacts who also use Fitbit and see where they are on the leaderboard in terms of steps taken. Clicking on a name within this section will allow users to “cheer”, “taunt” or message them, as well as see which badges they have earned. It gamifies activity, which is fun, especially if you have some competitive friends.

To recap

The Fitbit Ionic not only brings a solid, lightweight design with a beautiful screen, it also adds built-in GPS and dedicated swim functionality that the earlier Blaze was lacking.