“Most adults in the U.S. have multiple personal credit cards,” Brown said, “with an average of 3.7 per person.” And at least 4 out of 10 of all U.S. households carry a balance on their credit cards, racking up late fees and paying interest. The eight-employee startup helps customers avoid all those late fees and other charges, and offers them an APR that’s lower than the average APR of all their cards. If customers do not pay off their entire Tally balance, the company makes money on that lower APR, but again, they promise that amount will be lower than what customers would have had to pay their other banks.

http://techcrunch.com/2016/05/19/tally-raises-15-million-for-app-to-make-credit-cards-less-expensive-easier-to-manage/