In our Halo View review, we loved this fitness tracker’s comfortable and lightweight design, 7-day battery life, and of course, the Halo companion app. Three colors are currently available for purchase: active black, lavender dream, and sage green. You’ll get a 12-month subscription to the Halo fitness app free with your purchase of the tracker, and afterwards, the $3.99/month asking price is still less than most other fitness tracking apps. New features are consistently added to the Halo app, meaning it’s only improved since its launch. The app gives you access to plenty of guided workouts, from strength training to HIIT to yoga, as well as in-depth fitness tracking features, of course. However, one aspect of the Halo app has been met with some controversy: the body fat percentage calculator. Using your phone’s camera, the app creates a 3D-scan of your body and calculates your body fat percentage. Using it could cause problems for those with body dysmorphia or similar body image issues. If this is something you struggle with, you may choose to steer clear of this feature. Still searching for your perfect fitness tracker? Check out our lists of the best fitness trackers, plus the best cheap fitness trackers to help make your decision.