The FitStar is a newly released app, recently made available on Google Play, that is as close as you can get to having your very own personal trainer.
This app is capable of accurately and consistently tracking your weekly exercise progress, including the details of each workout along the lines of metrics such as calories burned and total time spent exercising. For added functionality, you can also hook up your FitStar app with calorie trackers like the MyFitnessPal. For a price of $7.99, you can enjoy access to unlimited personalized exercise sessions. You can also take advantage of as many as two customized routines a week as well as a handful of exercise packages.
The FitStar app clearly is bent on reshaping the concept of exercise in the modern context.