Puffer is a tool for protecting your privacy and security on your Android device. It works by using the device's built-in VPN (Virtual Private Network) function. This function establishes a connection between the device and the VPN server, allowing the user to access the Internet.

Puffer works as a local VPN, which means that it does not route the user's traffic to a third party. The other end of the connection is on the device. From there, Puffer monitors outbound connections and prevents connections to services trying to track the user.

The purpose of this tool is to protect the user from malicious websites and services.