Getting in shape is always good for your body. Runtastic Sit-Ups is a personal training app that helps you build that six pack.

Runtastic Sit-Ups is part of the Runtastic series of sports applications. This app helps you focus on getting your abs in shape but you can integrate with your Runtastic MyFitnessPal account if you're already registered.

Need a personal trainer? If you have a mobile device with Runtastic Sit-Ups installed, you won't need one!

Do crunches with your mobile in hand

Runtastic Sit-Ups uses your phone's accelerometer to detect movement. The idea is that you hold the phone while doing the exercises. Runtastic Sit-Ups will detect your movements and effort expended.

Before starting, the app lets you design your training plan. The Lite version has only one plan or you can upgrade to the Pro version for more choice. Your personal plan shows you when you need to work out and what exercises you should do every day.

While doing crunches, you'll hear your coach's voice (must be downloaded separately, depending on the language you'd prefer).

As you continue your workouts, track your progress in the app, and if you join the Runtastic online community, you'll get further data analysis, coaching, and encouraging comparisons with friends! If you're proud of your progress, you can share it on Facebook.

Does it work?

Runtastic Sit-Ups has some problems with movement and sit-up detection.

The app integrates with Runtastic, though if you want other exercises, you have to install each application separately.

Take your motivation to the next level

It's not easy to follow a workout plan. You need motivation, time, and a sport you enjoy. Applications such as Runtastic Sit-Ups offer social and technological benefits that help you reach your goals.