About Crumb
Crumb is a WhatsApp-first food logging and gluten-risk companion. It helps people log meals, read labels and menus, and spot patterns. It is not medical advice and cannot guarantee any food is gluten free.
What Crumb is built for
Crumb prioritizes speed, trust, and clear food judgment: concise replies, evidence-first calorie reads, conservative gluten checks, and user-owned logs.
Credits and data sources
- Open Food Facts product data is used for barcode lookups with attribution. Open Food Facts data is licensed under the Open Database License (ODbL).
- USDA FoodData Central is used for calorie and branded-food grounding. USDA FDC is a United States government food database.
- OpenStreetMap venue data may be used for gluten-free venue discovery. OpenStreetMap data is licensed under the Open Database License (ODbL).
- ZXing JS is used for barcode decoding. ZXing JS is licensed under Apache-2.0.
- pngjs and jpeg-js are used to read image files before barcode decoding.
- Official restaurant allergen pages and PDFs are used only as source-attributed, chain/country-specific references. Parser output is staged for review before becoming active where required.
Open-source policy
Crumb can use public repositories when the license allows it. Public does not automatically mean free to copy. Permissive and public-domain sources are preferred; restrictive or unclear code is not copied into Crumb. When attribution is required or useful, it is credited here or next to the answer.
Safety stance
Crumb treats crowd and model signals as caution, not certainty. Community learning can raise warnings for gluten risk, but it never upgrades a food or restaurant to safe automatically.