It happens every time: youre doing sit-ups, counting reps, and, suddenly you lose count! iRep is a simple app that helps you keep track of your reps. Simple. Straight-forward. Use the app to help you keep track of anything you need to count. The app features a big easy-to-click button. Tap it as you go. You can adjust to counting by 1, 2, 5, 10, and 20.