Buy Verified Cash App Account. Cash App is a mobile payment service developed by Block, Inc. (formerly Square, Inc.) that allows users to send, receive, and store money. It functions as a peer-to-peer (P2P) payment platform, similar to services like Venmo or PayPal, and is available for both iOS and Android devices. Users can instantly transfer money to others using their Cash App account. A free debit card linked to the Cash App account that allows users to spend their balance at stores or online.