cronometer

Track nutrition with precision using Cronometer, the most accurate calorie counter and macro tracking app trusted by doctors, dietitians, and fitness professionals worldwide. Whether you're pursuing weight loss, building muscle, or optimizing overall health, Cronometer combines verified nutrient data, AI-powered features, and science-backed tools to give you complete control over what fuels your body.

Unlike typical crowdsourced calorie counter apps, Cronometer gives you access to 1.1M+ lab-analyzed food entries from the USDA and other trusted sources. This means every calorie, macro, and micronutrient logged is backed by verified data — not estimates. Go beyond surface-level calorie counting and track 84 micronutrients alongside macronutrients, giving you a holistic view of your nutrition that supports lasting health improvements.

Logging food has never been faster with AI photo logging. Simply snap a photo of your meal, and Cronometer's intelligent system identifies ingredients, estimates portions, and auto-fills your diary with NCC-sourced nutrient data. Review and fine-tune macronutrients in seconds, then track your progress with confidence. For faster manual entry, use the built-in barcode scanner to log packaged foods instantly.

Customize your tracking to match your goals. Set precise calorie targets, nutrient thresholds, and macro percentages tailored to your specific needs. Use repeat items to automate previously logged foods and recipes, saving time on daily logging. Track hydration and sleep alongside nutrition, then sync wearable devices like Fitbit, Garmin, Dexcom, Apple Watch, Samsung, WHOOP, and Oura to unify all your health data in one accurate dashboard. Create custom biometrics and nutrition scores to monitor up to 8 key nutrient areas, then view detailed charts across any timeframe.

The Food Suggestions feature discovers foods that help you hit your targets, while Nutrient Oracle reveals the top contributors to any nutrient you're tracking. Share custom foods and recipes with friends and community members. When you're ready to share progress, generate professional PDF reports to discuss results with health professionals.

Upgrade to Cronometer Gold for premium tools including advanced AI photo logging, nutrient analysis, macro scheduling, recipe importing, fasting timer, and an ad-free experience. Whether you're tracking macros for performance, counting calories for weight loss, or monitoring micronutrients for optimal wellness, Cronometer delivers the accuracy and insights you need to achieve real results.