If you're looking to jump-start your fitness goals without spending loads of money in group fitness classes, Aaptiv is the app for you. It's essentially your very own virtual personal trainer. It customizes your workouts based on the fitness goals you've set, and it tracks your journey all while listening to today's hottest music. You want to train for a marathon? Are you looking to build more muscle? Not a problem, Aaptiv has it all. The best part? All workouts can be completed in the comfort of your own home, at the gym or even outside, no group fitness necessary.