The Sense looks like a higher-end Versa and comes in just one 40mm size with a stainless steel rim around the square face, but instead of a physical button, it has an indentation on the side that vibrates when pressed and can be used to control the screen. The Series 6 looks like every other Apple Watch that has come before it, with a square face available in two sizes (either 40 or 44mm) plus a digital crown and side button. Both are comfortable to wear, with familiar designs If you want the most robust sleep tracking, temperature sensor and the best battery life, get the $329 (£299, AU$499) Fitbit Sense (which is currently on sale for even less).ġ. If you want the best overall smartwatch, with seamless fitness tracking and safety features, get the $399 (£379, AU$599) Apple Watch. After two weeks of wearing these watches, I can tell you that there is no one-size-fits-all option. If you have an Android phone, the Fitbit is your only option, but both work with iOS devices, making the decision trickier if you have an iPhone.

Read more: Fitbit Versa 3 review: A happy medium of health features and fitness tracking To help you decide which is right for you, I've compared them on everything from fitness tracking to battery life and overall performance. Both also have an electrocardiogram (ECG or EKG - Apple uses ECG) app, track workouts, sleep and blood oxygen levels, but they're different in the way they go about doing these things. The Apple Watch Series 6 and Fitbit Sense are the top smartwatches that can help keep an eye on your fitness levels and act as a phone alternative on your wrist.

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