The 15-Day Challenge workouts are completely FREE and will be sent out each day as soon as you sign up. We do have a meal plan app, called Flat Abs Fitness that you can use to get significantly better results from the challenge... but it's completely optional, you don't have to buy it. We offer a free 7-Day trial to the Flat Abs Fitness Program and then after that we try to make it as inexpensive as possible for everyone, only $27/month. Since nutrition is 80% of the equation to achieving your ideal body, it makes a huge difference. If you're interested in checking it out make sure to click below!