iOS/Android: We like Sworkit because it makes exercising a little easier by giving you randomised workouts for any time limit you choose. A recent update adds a few nice new features, including a new set of videos to help you through your workout.
The new workout videos are easily the best part. Now, when Sworkit gives you an exercise, you also get a small video on the screen showing you how to do it correctly. Also new in this version is a new pilates workout, reminders, an optional rewards system and a countdown to the next exercise.
Sworkit (Free/$3.99 Pro version)