Claro ScreenRuler

Screen tinting
Some people find common black-on-white text hard to read, and prefer off-white colours. ScreenRuler can provide a coloured overlay for the whole screen so everything is tinted and easier to read. You can choose any colour you like and change colour and intensity depending on the time of day, the light conditions and what you find best.

Coloured reading ruler
Some people find focusing on the current line of text hard, and going from one line to the next as you read even harder. ScreenRuler can give you a strip or ruler across the screen. You can also make the screen outside of the strip darker to help you concentrate on the strip.

A coloured underline that goes across the screen and follows the cursor, helping you to stay on the line you’re trying to read and concentrate on.

Works with multiple monitors and any video card. Sits quietly in the system tray (Notification Area) out of the way while you work. Available for Windows PC and Apple Mac OSX.

System Requirements
ScreenRuler Suite for PC
Windows 10, Windows 8/8.1, Windows 7 SP1, Windows Vista SP2 1GB RAM 20MB hard disk space

ScreenRuler for Mac
Mac OSX 10.7 (Lion) or later
25MB hard disk space
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User Guide