Zero Calories Fasting Tracker is a free Android application designed to assist users in managing their intermittent fasting routines. This lightweight app allows for customizable fasting durations, tracking of body weight, and monitoring of key health metrics such as ketones, glucose, and body fat. Users can also engage in group fasting, making it a social experience alongside personal health goals. With features like notifications for fasting times and the ability to export data to CSV, it supports a structured approach to fasting.

The app emphasizes the health benefits of intermittent fasting, including improved cell repair, increased longevity, and enhanced insulin sensitivity. It facilitates weight loss by helping users maintain a caloric deficit more easily. Additional features include a widget for quick time tracking, comparison of weight changes over fasting periods, and the ability to sync data with the web for comprehensive management. Overall, it serves as a practical tool for anyone looking to incorporate intermittent fasting into their lifestyle.