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SumUp is a point-of-sale (POS) software providing transaction processing for small and medium-sized businesses. The platform offers tools for accepting credit and debit card payments through mobile devices. SumUp's app and card reader connect with smartphones or tablets via Bluetooth, allowing merchants to process transactions on location. The app supports additional features like tipping options, digital receipts, product libraries, sales history tracking and can accept payments when offline. With transparent fee schedules —typically charging per-transaction rates without fixed contractual terms— SumUp aims to provide an affordable service for businesses looking to avoid complex fee structures that come with traditional merchant accounts.