Brogrammer - Easy fitness for the busy bees
wger - FLOSS workout, fitness and weight manager/tracker written with Django
Strongify - Strongify is the easiest workout tracker app. Enter the number of reps and the weight you lifted in just a few taps. Create any exercise that you want and track your progress over time.
Strong.app - Strenght training logger.
Love HIIT - Free exercise timer, share your workouts
Chamath Abs Calculator - Calculate how long will you take to get SixPAC ab'ed