Fitocracy

The app requires you to provide some details for registration, like your age, height, weight and gender. You can then pick your interests, choose from lose weight, improve workout, cardio, group training or sports. The app provides you with some workout tips, you can add sessions and pick exercises that you’ve completed.
 
It lets you create and adjust workout sessions with exercises found inside the app and then share your routine with others. You can follow other users and leave comments to their sessions, so you would stay motivated. The app also helps you create a workout log, save routines and unlock achievements to view your progress. It also syncs all information on the web version, so you can check it any time.