Build a mobile app that cuts household food waste. 1) Pantry onboarding: user adds items by scanning barcodes or typing names, with AI predicting the category and typical shelf life. 2) Expiration dashboard sorted by what goes bad soonest, with color-coded urgency. 3) Smart reminders that notify a few days before each item expires, not on the day. 4) AI recipe suggestions that prioritize items closest to expiration and match user dietary preferences. 5) Auto-generated grocery lists that know what is already in the pantry so users never double-buy. 6) Household mode: share the pantry with family members with separate login. 7) Stats screen showing money saved and food saved from the trash. 8) Photo-based quick add: snap the fridge shelf and AI lists likely items to confirm. 9) Push notification schedule the user controls.