Hevy - Simple workout logging, insightful analytics, and a growing community of gym athletes.
Strong.app - Strenght training logger.
Nike+ FuelBand - Nike+ FuelBand is the product of Nike Inc.
Fitloop - Bodyweight fitness workouts for everyone
Streaks Workout - The personal trainer that you actually want to use.
Fitbod - Personalized Strength-Training powered by Machine Learning