Runtastic has Pull-Ups PRO Trainer for the iPhone, iPod Touch, and iPad in the iOS App Store and for Android in the Google Play store for FREE (regularly $1.99) for a limited time.

Pull-ups are among the most famous bodyweight strength moves ever, plus they require minimal equipment. No bar at hand? You can do your pull-ups with rings, a tree branch or bars at a park, get creative! A scientifically developed training plan makes the most of your efforts while keeping you motivated on your way towards your goal. What else? You don’t have to count every repetition – let the accelerometer of your iPhone/iPad take over. And now, there’s one thing left to do: Try it out. You can do this!