JEFIT - Jefit is the #1 popular gym workout app for Android and iOS. Jefit allows you to manage your training routine and keep track of your workout progress easily.
Steddy - Not another gimmicky fitness app!
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.
What's Vita - a lifestyle coach wherever you are, whenever you want
Runtastic - Runtastic offers a series of fitness apps that can be used to track your running, walking, hiking, and cycling, as well as many other fitness routines. Read more about Runtastic.
Peak: Fitness Widgets - Peak lets you make your own fitness dashboard, and always stay on top of it with a range of widgets.