Tab lets you pay your restaurant bill with your smartphone, and easily separate the bill into individual or group tabs.
So far, 14 Montreal restaurants have signed up for the new app, including one of the city's oldest restaurants, Moishes.
Tab is free for users. Restaurants pay a processing fee on par with a credit card payment.
App co-founder Adam Epstein says the biggest hurdle is getting staff on board.
"Servers are always concerned. And I'm very happy to address that. Our average tip size to date is about 19.1 per cent."
Epstein has big hopes for Tab in Montreal. He says it helps a lot to have Moishes behind him.
"I went to McGill and came here to celebrate. It has a warm spot in my heart so it means a lot," says Epstein.
Lenny Lighter, the owner of Moishes, says he expects everyone will be paying their bills with their smartphones eventually. He's just jumping on the trend ahead of time.
"We noticed our market was shrinking, and aging and we needed to do things to bring in a new younger clientèle."