Merchant App is a free cloud-based mobile point-of-sale (mPOS) designed for merchants and individuals who want an easy, convenient, and cost-effective mobile payment service. It is a Payment Card Industry (PCI) compliant system that offers multi-layer security and multiple encryption technologies to ensure the app is strongly secure. With Merchant App, merchants can link their existing card processor accounts like Intuit, Stripe, PayPal, Braintree, CardConnect, Authorize.net within the app.

Moreover, merchants can scan cards from their buyers' wallets to accept payments with their mobile phone. The app also allows merchants to manually enter plastic card numbers to process payments from their customers. The app is accessible anywhere and anytime in the world, and no add-on hardware is required to process payment transactions. Merchants can add sales tax, include tips in the transaction, and optionally ask shoppers with PayApp Wallet to enter the zip code of the card for further authentication. Merchants can also set a PIN for the access of the Merchant App. PayApp does not charge any transaction or monthly fee to merchants, making it an affordable option for businesses of all sizes.