Fitbod - Personalized Strength-Training powered by Machine Learning
Giftbit Payment API - Stripe for gift cards
MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.
Felt for iPhone - Handwritten cards for the modern world
Fitocracy - Fitocracy is a social network that turns exercise into a cooperative and competitive exercise with friends, rivals, and strangers.
Raise - The easiest way to save money on the go