
In both cases, a Daily Readiness Score is available through the Premium version, which aims to rival the WHOOP 4.0 as it offers a score based on how well-rested you are from the last bout of exercise. While the Fitbit app (opens in new tab) is free for any user to download, those looking for more statistics can pay $9.99/£7.99 per month for more detailed insights into everything from sleep to stress, fitness, cardio capabilities, and more. Thanks to the standard heart rate tracking technology in both devices, however, the Luxe will flag any irregular heart rhythms.īoth are relatively similar when it comes to value for money with the Premium subscription. Once the statistics have synced with your app, you can then share them with your doctor. It's also the only device of the two that comes with an electrocardiogram (ECG) sensor, a feature that allows you to monitor your heart rhythm for atrial fibrillation - a type of heart rhythm irregularity. It's a great one for anyone looking to lower their daily stress levels as the sensor allows your device to pick up minor changes in adrenal activity via the skin, sending out responses based on how much the activity changes.

The Charge 5 has an electrodermal activity (EDA) sensor too, an integral feature only available on this model and the Fitbit Sense 2, the newest Fitbit. While it may not be an integral feature for everyone, especially if you're more into gym-based training than running or cycling, I really noticed the difference when I didn't have it. It has built-in GPS for instance, meaning you can leave your phone at home and still head track your distance, pace, and route via the app, whereas the Luxe requires a connected phone for this.
