Runtastic Sit-Ups A program that will help you build up your abdominal muscles. The app will provide you with the most effective sit-up training program and monitor its execution. The app will count each of your sit-ups using the accelerometer of your mobile device. The app can also give you voice prompts and calculate the break time between sets. You can share your records and achievements with your friends via Facebook, Google+, Twitter, and email.
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