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Sum up
Buy, sell and transact
SumUp is one of the challenger card readers we tested against Square, Zettle and incumbent Verifone, with case studies covering reader setup, taking a payment and building a store.
Key takeaways from 4 Case Studies
SumUp sits with the challengers that beat Verifone on speed and simplicity, not on fees
Card reader setup is far smoother than the incumbent's, where hardware UX is won early
Taking a payment needs fewer steps than Verifone's, and merchants repeat it all day
Last updated: 27/08/2026
Case Studies
UX Case Studies
Verifone are so far behind with their software compared to iZettle, SumUp, Square and Shopify that I doubt they'll ever catch up.
Most iZettle, Square and SumUp customers would save money by switching to Verifone. But that doesnt mean they should.
The incumbent provider Verifone performed considerably worse than iZettle, Square and SumUp.
The challenger providers were cheaper, simpler, faster and more efficient. And not just a little bitconsiderably so.
There are more than 1400 UX Bites like this
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