CheckoutProof: Receipt Audit

CheckoutProof helps you review a store receipt before you leave.

Scan or import a receipt and CheckoutProof checks for things worth verifying: possible duplicate scans, inconsistent prices for the same item, subtotal and total math that may not match, suspicious quantity or extended-price lines, and optional receipt-vs-shelf-tag price mismatches.

Take a picture of a shelf tag or sale sign while you shop, then compare it with the price on your receipt.

CheckoutProof does not decide that a store broke a law and does not guarantee that every flag is an overcharge. It gives you a short list of items to verify with the retailer.

Privacy-first MVP: no bank login, no account required, no CheckoutProof cloud server required for core auditing, and on-device OCR.

Great for groceries, pharmacies, discount stores, hardware stores, warehouse clubs, and everyday shopping.