I've found various apps that allow you to write data to NFC tags, and I know the phone has built-in features for sharing some things directly to other phones (e.g.: pictures, apps) via a combination NFC/Bluetooth connection. However, I'm interested in finding a way to send arbitrary data (e.g.: text, URLs, etc) directly from one phone to another using NFC only.
Is this possible via built-in functions that I just haven't found yet, or is there an app required?