PayPal is a popular online payment system that lets you send and receive money online--and now in some physical stores--with the added benefit of buyer and seller protection for most transactions. Payments aren't limited to a standard browser transaction; the company has a free mobile app that lets you send and receive money securely.
PayPal's mobile app is useful, without being overwhelmingly full-fledged. You can send or receive money and check your account status, but you can't perform more complicated tasks, such as transferring money from your PayPal account to your bank account. The local tab is helpful, since it allows you to locate people and businesses who are willing, to take PayPal as a form of payment.