Twenty

Windows app that helps you follow the 20-20-20 eye-strain rule.

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Twenty is a free Windows app that reminds users to follow the 20-20-20 rule for reducing digital eye strain: every 20 minutes, look at something 20 feet away for 20 seconds. It's aimed at people who spend long hours looking at a screen and want a simple, automatic reminder rather than trying to remember on their own.

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