The Instacart app gives you the power to get groceries, household items, andmore delivered the same-day. Redeem in the app: 1. Sign up for Instacart or log into your existing account 2. Enter the main menu 3. Tap Credits, promos & gift cards 4. Enter the code Redeem on the website: 1. Sign up for Instacart or log into your existing account 2. Click Account or your name 3. Click Add promo or gift card 4. Enter the code