Training made easy. We love the NTC app, available for free on iTunes for iPhones, iPads and iPods. You start by setting your goal, whether you want to get lean, toned, strong or focus on an area of your body and choose whether you want a 30 or a 45 minutes workout and you get video and audio instructions as you’re performing the routine on how to stay in the right form and when to start and stop. You can also play your own music within the app.