Medidor de Anel e Alianças is a free, user-friendly Android app developed by Casa das Alianças. The app helps you determine the perfect ring or alliance size for your finger, according to the standard Brazilian jewelry stores use. It is a straightforward app that makes it easy for you to get the right measurement for your finger to wear rings and alliances comfortably.

The app works by using a ring that you already own and feel comfortable wearing. This ring will serve as a reference for finding your perfect measurement. Additionally, you can use this app to buy rings and alliances online and ensure that the size is right before making a purchase. It is also an excellent tool for gift-giving. If you have someone's ring, follow the easy steps in the app to discover their exact measurement.