I've been using MyFitnessPal for a while now. It's not just for tracking workouts but also for keeping tabs on what I eat. The food database is massive, and it helps me stay on top of my nutrition goals while also tracking my exercise.
I'm more into weightlifting, so I prefer Muscle Booster workout tracker . It's tailored specifically for strength training, with features like customizable routines, progress tracking for lifts, and built-in timers for rest periods. It's really streamlined and focused, which I love.