Startup The Start-up That’s Gunning for Square

Another mobile payment start-up enters the ring. The founder explains how his company is different.

EXPERT OPINION BY CHRISTINA DESMARAIS, CONTRIBUTOR, INC.COM @SALUBRIOUSDISH

Jun 20, 2013 Co-founded by billionaire Jack Dorsey, Square was the first to give people a free mini card reader to plug into a mobile device and accept credit and debit cards on the go. Square’s charm is in its simplicity–there are no hidden fees and you only pay a flat rate of 2.75 percent per swipe or $275 a month and nothing per swipe.

Some big guns have tried to get in on this action. With similar flat-rate models, you can also use your phone or tablet to accept payments with a slew of copycats, such as PayPal Here, Intuit GoPayment, and PayAnywhere.

But now another company wants to be your digital cash register: Punchey, a Boston-based start-up that just came out of beta targets small businesses that typically charge customers higher dollar amounts.…