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When you visit a retailer’s website, the AddUp browser extension automatically calculates what each of your cards would earn and notifies you of any additional offers. This way you never you never miss an opportunity to earn maximum credit card rewards while shopping online.

The extension also allows you to search by retailer to see what each of your cards would earn at a retailer without visiting their website, and notifies you of opportunities to earn by using available payment processors and shopping portals. 100% free and available today on Chrome and Edge.