Ring Size Finder is a free Android application developed by P2App that helps you determine your ring size without having to visit a jeweler. This app provides two ways to measure your ring size: by diameter or circumference. With its visual guide, you can measure your finger accurately and share your ring size on social media networks.

To measure your ring size, you can simply put your ring on the central circle on the first screen and adjust the circle's size using the bar at the bottom to match the ring's inner circle. A popup will then appear with your ring size in US standard. To measure your finger size, you can start by cutting a thin strip of paper and wrapping it around your finger below the joint and close to the knuckle. Mark the spot where the paper meets and use the app's chart to measure your ring size.

Ring Size Finder is a handy tool that eliminates the need to visit a jeweler and helps you find the perfect ring size.