A per-item nutrition tracker: add foods, set a calorie target and macro ratio, and the solver computes portion sizes that hit it exactly - with micronutrient tracking against RDAs, recipes, and cost awareness.
Medical disclaimer
Macro Balance is for general informational purposes only. It is not medical, dietetic, or health advice, and it is not a substitute for consultation with a qualified physician, registered dietitian, or other health professional. Nutrition values come from third-party databases and label reading and may be incomplete or inaccurate - verify anything you rely on. Do not use this app to manage a medical condition. If you have (or suspect) a condition affected by diet - including diabetes, kidney disease, eating disorders, or allergies - or are pregnant or nursing, consult a professional before changing your diet.
Privacy policy
Your data stays on your device: foods, recipes, settings, and history are stored in your browser's local storage and are never uploaded to an account (there are no accounts). When you search for a food, scan a barcode, or request recipe suggestions, only the search text, barcode number, or ingredient names are sent to this app's Cloudflare Worker, which forwards them to the relevant public database (USDA FoodData Central, Open Food Facts, TheMealDB) and returns results; these requests are rate-limited by IP but not stored. If - and only if - you explicitly use "Photograph label" or "Ask Claude", that photo or ingredient list is sent to Anthropic's API to be processed, subject to Anthropic's privacy policy. This app contains no analytics, no advertising, no trackers, and sells no data. Clearing your browser storage deletes everything.
Data & software attributions
Indian Food Composition Tables (IFCT) 2017 - T. Longvah et al., National Institute of Nutrition, Indian Council of Medical Research, Hyderabad. Nutrient values for 528 Indian foods, per 100 g edible portion.
USDA FoodData Central - U.S. Department of Agriculture, Agricultural Research Service. fdc.nal.usda.gov (public domain).
Open Food Facts - Database contents licensed under the Open Database License (ODbL); individual contents under the Database Contents License. openfoodfacts.org. Product data contributed by volunteers worldwide.
TheMealDB - Online recipe suggestions. themealdb.com.
ZXing (barcode decoding, Apache-2.0) · jsPDF (PDF export, MIT) · Roboto & Roboto Mono (Google Fonts, Apache-2.0/OFL) · Solarized color palette by Ethan Schoonover (MIT).
Anthropic Claude - optional label reading and recipe generation, only when explicitly invoked.