This app is able to repeatedly calculate the divided value by design ratio, and easily change the ratio type (golden ratio, silver ratio, and so on). Moreover, you can divide the result value, or combine the sibling value.
because this app contains the list of standards (A4, B5, iPhone display size, and so on), you can input the layout size without looking up in other material.
You can calculate golden ratio, silver ratio (yamato ratio), silver ratio (2nd metallic ratio), bronze ratio, equality(1:1), triangular(2/3:1/3),.