Cold Turkey - Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
Streaks Workout - The personal trainer that you actually want to use.
Freedom.to - Freedom is a productivity hack that lets you block apps, websites or the entire Internet on iPhones, iPads, Windows and Mac computers.
Daily Yoga - 50+ yoga classes, 400+ workout poses, w/ HD video and music
Stay Focused - More suitable with Google Chrome, this service enables you ensure you do not waste precious time on updating Facebook status or chatting with people.
cure.fit - At-home fitness app for strength, cardio, dance and yoga