Sling Money | 4,440 followers on LinkedIn. Effortless Money Everywhere | Sling Money aims to create a world where sending and receiving money is effortless. The app allows users to pay people, and not numbers - no account numbers, IBAN or sort code needed, all you need is the recipient's name to send them money. The app leverages blockchain technology to allow for almost instant money transfers, in any currency, for a negligible fee.