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5 listings we've seen · as of 6 Oct 2026. This is the maker name shown on the store, not proof of who owns the company.

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Comprehensive time calculations - add, subtract, compare times and dates, work hours, and more

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Quick and easy percentage calculations right from your browser

Education

Turn every new tab into a quick math challenge and keep your numerical skills sharp!

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Extract all email addresses from any webpage, including obfuscated formats

Education

Take a micro-learning break during doom-scrolling with brief Wikipedia snippets