Calculator Phi

Calculator Phi is a calculator that does simple arithmetic but with two additional features. One feature checks your two numbers to see if they form a golden ratio. The second feature will fill in a side of the ratio if you don't know it. For example, if you know the smaller number to be 610 the calculator will figure out the large number (≈987) for you.

The app also has sequencers that will generate a list of golden numbers or Fibonacci numbers for you.

With its converter you can turn your pixels into millimeters, centimeters, inches and vice versa.