On average, customers tip more than 21 percent of the after-tax total, Cove says.
They can set a default tip or choose to increase or decrease the tip, depending on the service.
More than 5,000 locations nationwide accept this app. Once users inform servers they plan to pay with TabbedOut, they have the option of paying their tab while still in the restaurant or having the app close it for them automatically once they leave.
In addition to saving time, customers also receive offers for using the app.
While marketing director Chris Scheppler said more apps are now available, he doesn't think it's too rife with competition.
"I don't think the space is becoming too crowded," he said. "There are a lot of competitors that have come and gone already."
This New York-based start-up's app launched in November and is accepted in more than 40 restaurants in the city. More are on the way.
Customers check into the restaurant anytime before or upon arrival. They then let their server know they're using Dash, and the server links the bill to the customer's account. This prevents dining and dashing without paying.
Customers can tip whatever they want and split the bill. The average tip is 24 percent, said Gennady Spirin, co-founder and COO of Dash.