With more than seven million users worldwide, this fabulous all-round fitness app just won the Microsoft Health Users Group 2012 Innovation Award. "Its built-in GPS that maps your walks, runs or bike rides is a great way to track your workouts," says Charlebois. Endomondo's social-network feature also lets you compete with friends and give each other real-time pep talks.

Available for: Android, BlackBerry, iPhone, iPod Touch and iPad

Price: Free