On an item’s edit screen, turn on Track Expiration Date and set the Expiration Date. The date shows in red on the item’s card and screen.
To see what expires first, tap the sort button (↑↓) on the Kitchen tab and choose Expiration Date. Pantry Health in Reports on the Home tab lists what expires this week, with recipes that use it.
Menu Planner 2 doesn’t send a reminder before something expires.