This app continuosly captures images using the device camera and alters the colours on-the-fly as selected by the user.
By changing colours, for example converting red to blue, the app allows people affected by daltonism to differentiate colours that normally would look identical.
Of course, in the process other colours which previously were differentiated will look the same.
Selecting an appropriate hue it is possible to make pictures or texts containing indistinguishable colours more readable.
The user can select a slower refresh rate (for example when watching static images) and to use the zoom in/out function.