This application was reproduced it in the iPhone.
You can test for color vision by matching the color of the circle was divided into top and bottom.
【How to use】
・Please match the color in the upper half and the lower half of the circle.
・The circle is displayed for ten seconds. Afterwards, a white circle is displayed as two break time of the second. The optical illusion is prevented according to break time.
・Please push the result button when you think that an upper half and lower half colors is the same color.
This application doesn't guaranty whether the color vision is normal or abnormal.
If you hope for the accurate diagnosis, you should undergo an examination as an ophthalmologist.