Zero Calories Fasting Tracker is a free app developed by Intermittent Fast Crew that helps users achieve their weight loss goals through intermittent fasting. The app offers more than 10 free fasting plans for both beginners and experienced fasters, making it easy to choose a plan that works best for you. With its simple and intuitive interface, the app allows you to easily adjust your fasting and eating windows, set fasting notifications, and track your weight, ketones, glucose, body-fat percentage, body measures, water intake, BMI, and more. It also features a smart fasting coach, science-based tips and tricks, and social fasting that allows you to fast with friends and other people around the world.

The app is suitable for both men and women and is backed by scientific research that proves the effectiveness and health benefits of intermittent fasting. It is easy to use, with no registration required, and can be synced with the cloud for easy access to your data. However, it is important to note that if you are under 18 years old, pregnant or breastfeeding, have health issues or are underweight, it is recommended to consult your doctor before fasting.

Overall, Zero Calories Fasting Tracker is a comprehensive and user-friendly fasting app that makes it easy to achieve your weight loss goals and live a healthier lifestyle.