Color Test is a free Android app developed by Hexal AG that provides a reliable Ishihara test for color vision deficiencies, commonly known as color blindness. This app has been authorized by Cassiopeia and is popular among vision specialists and laypeople alike. The iPhone version of Color Test has been recommended and used by many doctors across various fields.

Color Test is easy to use and provides accurate results. It is ideal for those who suspect they might have color vision deficiencies or for individuals who need to take the test for professional purposes. The app is user-friendly and provides clear instructions on how to take the test.

It is worth noting that if users encounter any problems with the app, they should not leave a negative review or rating. Instead, they should contact the developer directly via email with their device specifics and a description of the issue they encountered.

Overall, Color Test is a reliable and useful app for anyone who needs to take an Ishihara test for color vision deficiencies.