This application looks really well designed and would be very useful for an project I am working on The price is reasonable, but I am concerned about the number

This application looks really well designed and would be very useful for an project I am working on The price is reasonable, but I am concerned about the number of reviewers who claim that the color picker isn't accurate. Was there a bug with the color picker? If there was, was it fixed? If not, what could be causing these accuracy complaints?