Kash is a current member of Y Combinator. The company is aimed at cutting out credit card fees via their iOS and android app. Unlike the successful Starbucks app, which forces users to create an account and enter their credit card information for the first transaction, Kash’s app just shows a green debit card labeled “tap to pay,” and the first purchase is on them. It’s a smart way of jumping straight to the best part of the app experience,