Zero - Fasting Tracker

Track intermittent fasting progress with Zero - Fasting Tracker, the app that helps you reach your health goals without counting calories or following restrictive diets.

Intermittent fasting works by changing when you eat, not what you eat. By extending the time between meals, your body naturally consumes fewer calories while tapping into fat stores for energy. Zero guides you through this process with a simple fasting timer, educational content from experts, and tools to monitor how your body responds over time.

Start fasting right away with the free timer feature. Set your goal—whether that's a 16-hour fast, 18-hour fast, circadian rhythm fast aligned with sunset, or a custom duration up to 7 days. Reminders keep you on track, and real-time insights show you exactly where you are in your fasting window. No calorie counting required.

Understand what's happening inside your body with the statistics dashboard. Log your weight, sleep, mood, and energy levels to spot patterns and see how they shift as your fasting practice develops. Sync with Google Fit to pull in health markers automatically, then watch trends emerge over weeks and months. The journal feature lets you record how you feel during fasts, which helps you identify the rhythm that works best for you.

Stay motivated by joining challenges aligned with your goals, earning achievements for hitting milestones, and inviting friends to fast alongside you. Learn from fasting experts through an expanding library of articles, videos, and Q&A sessions. Whether you follow keto, low-carb, paleo, or any other approach to eating, this app adapts to your choices.

Upgrade to Zero Plus for advanced features that deepen your understanding. Fasting Zones show you the physiological states your body moves through during a fast, helping you recognize why certain times feel easier than others. Premium content cuts through the noise with expert-curated resources on fasting science, metabolism, and sustainable habit change. Advanced statistics reveal correlations between your fasting practice and weight, sleep, and mood—so you can make informed adjustments without guesswork.

Common fasting protocols are built in: the 16:8 (16-hour fast), the 18:6 (18-hour fast), one-meal-a-day (OMAD), the 20:4 fast, and more. For circadian rhythm fasting, the app automatically calculates sunset for your location each day, removing the math. Zero - Fasting Tracker works for beginners exploring fasting for the first time and experienced practitioners fine-tuning their practice.