Among the most popular per to peer payment apps is cash app. There's no need to have a debit card to a cash app card. If you're no need to have a debit card to add money to a cash app card. If you're unfamiliar with cash app, it's a peer to peer payment app. It is very easy to add money to your cash app card. You will have to pay a fee adding money to your cash app account. If you have any problems, you can contact cash app customer service.