Tired of your lack of motivation? Gain the comfortable confidence that comes with having a personal trainer for just $2.99. This app, cleverly named COUCH TO 5K, allows people of any fitness level to receive customized workout plans to gradually increase their fitness level over a period of 9 weeks. 

It'll coach you through the transition from walking to running, and by the end of the 9 weeks you'll be able to run 30 minutes without stopping, no problem. You can save your progress, and Couch to 5K is compatible with Nike+, meaning it'll correlate with the Nike running chip (speed, calories, distance...etc) all while incorporating your own playlist. Woo! 

This seems to be a top favorite among my older cousins; it's a good get-me-going app to kick you in the butt after taking a break from exercise.