Fiit is the #1 rated fitness app that gives you access to the most in demand personal trainers — at home and in the gym. From HIIT to yoga, take hundreds of classes, live leaderboard workouts and training plans that work around your schedule. They're about training smarter. So you can connect with a fitness tracker (including the Fiit device, Apple Watch and Garmin) to see your stats as you work out, and track your progress over time.