Jostens Ring Sizer is a free mobile application developed by Radius Technologies Inc. It falls under the Lifestyle category and is a handy tool for anyone looking to buy or measure a ring. The app is compatible with any mobile device and offers accurate measurements down to 1/8 sizes for any finger.

One of the best features of Jostens Ring Sizer is its ease of use. Users can quickly and easily measure their finger by placing it on the screen and adjusting the ring size on the app until it fits perfectly. The app also offers easy conversion to international sizing, making it perfect for anyone shopping for a ring online or overseas.

Overall, Jostens Ring Sizer is a reliable and user-friendly tool that provides accurate ring measurements. It is a must-have app for anyone shopping for a ring. However, it would be great to see more features added in the future, such as the ability to save measurements for future reference.