Use food before
it goes bad.

Scan a barcode once, and that product's name is instant and offline every time after. Type what you paid for spinach once, and next week's spinach arrives already priced. Put a real date on a food the app has never heard of, and the second bag gets a proper estimate instead of a guess.

And when the app's estimate is wrong about your kitchen specifically, it notices. If reference data says grapes last six days but your fridge keeps them fresh for ten, correct the date twice and the estimate moves to match. One odd package can never rewrite what it knows; a pattern always does.