GoldenRatio is a free Android application designed for calculating layout width and height based on the size of one side. It is developed by ZenDoor Studio and designed by Tamas Kulcsar and coded by Sandor Farkas.

The application is a simple and easy-to-use golden ratio calculator with an elegant design. It is perfect for people who want to create layouts with the golden ratio proportion. The application is not optimized for tablets yet, but the developers have promised to include this feature in the later version.

Overall, GoldenRatio is a great tool for designers who want to create visually appealing and balanced layouts. It is available for free on the Play Store and worth trying out for anyone who wants to experiment with the golden ratio.