Curve now lets you ‘go back in time’ and switch the card you paid with retrospectively Nonso Jr. July 03, 2017 A+ A- Print Email Curve, the mobile wallet and all-your-cards-in-one app, is rolling out a nifty new feature today that lets you retrospectively switch the card you used to pay. Read More via Tingle Tech Labels: TechCrunch, Tingle Tech