Most shopping and budgeting apps assume you’ll type prices manually or only track spending after checkout. Cartculator is the only shopping app that lets you see your total before checkout — just by scanning prices, not typing them. You scan shelf prices with your phone and see your cart total in real time. No decimals, no mental math, no friction. This removes the biggest reason people don’t track prices in the first place. Plus, very comfortable, automatic list matching (planned vs taken).