Ringmatch

Ringmatch helps customers measure their ring size directly on your product page using any bank card as a scale. No printing required. Shoppers simply hold a card against their screen to calibrate, then match a circle to a ring they already own. The app checks measurements against your actual inventory, showing customers which size fits and whether it's in stock. It automatically selects the correct size in your product picker, ready to add to cart. This means fewer guesses and fewer wrong-size returns for your store. Ringmatch supports US, UK, EU and Italian sizes, matching however you write your own size options. The app prioritizes privacy—it never reads your products, customers or orders, and stores no shopper data. Everything happens on the customer's screen.