The 30 Day Fitness Full Body Challenge is a free Android application designed by Vacify that offers a simple 30-day exercise plan to improve your fitness level. The challenge consists of a set number of ab exercises each day with rest days thrown in. The workout plan gradually increases in intensity, and by day 30, it will test anyone's fitness level. This app is suitable for both men and women of any age.

The app provides exercises with text and video guides, making it easy to follow along. You can also export and import your current progress, mark rest days, schedule your workouts, and enable push notifications to remind you of your daily exercise routine. Additionally, the app includes the best recipes for fitness, a timer for plank exercises, and the ability to track your weight using weight charts and calculate your BMI index.

Overall, the 30 Day Fitness Full Body Challenge is a great app for those who want to improve their fitness level and follow a simple and easy-to-use 30-day exercise plan. The app is free to use and includes a variety of useful features to help you stay on track with your fitness goals.