Plank Workout Challenge is an iPhone app developed by OHealth Apps Studio. This free app falls under the lifestyle category, specifically in health and fitness. With Plank Workout Challenge, you can conveniently perform core strength exercises at home to lose weight and strengthen your deep inner core.

The app offers a variety of challenging and effective plank exercises that target your entire body. By following the 30-day plank workout program, which includes both static and dynamic variations, you can achieve a stronger core, flat abs, and improved posture.

Plank Workout Challenge caters to users of all levels, starting from beginners who can begin with the basic plank exercise. As you progress, you can gradually increase the duration of each workout to maximize results. The app also provides advanced variations that add extra challenges to tone your abs, back, and shoulders.

Please note that Plank Workout Challenge offers a subscription that provides unlimited access to all features. The subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Terms of use and privacy policy can be found on the developer's website.