Check any label against your own food rules. Offline, no account.
Save the words that matter to you — what you avoid, what you are cutting back on, what you look for. Every label gets checked against your words, not somebody else's idea of healthy.
The food database ships inside the app. There is no account, no server, and no internet connection at any point. Your rules never leave this phone.
Type one thing you avoid. The app expands it into related ingredient names so you catch it under all its aliases, and you can switch off any that catch the wrong thing.
You save the words that matter to you — gluten, palm oil, added sugar — and Sift expands each one into the ingredient names it hides behind. Search a product and Sift marks those words right inside the ingredient list.
USDA FoodData Central, a public domain dataset published by the United States Department of Agriculture. The publication date of the copy in your app is shown in Settings. Always check the physical packaging — it is the only current source of truth.