sweetgreen for iOS - Order, pay, rewards. It's so clean, you can eat off it.
VisualCode - QR codes for everything
Pay Finders - Discover and explore local merchants that accept Apple Pay
Shop'fy Stash - Curated list of tools to help build your Shopify Business
Pay in apps with Venmo - Make purchases in apps using your Venmo account
Link to QR - Free beautiful QR codes