None. Cron Expression Builder is purely client-side. All parsing, validation, and schedule calculation runs in your browser. Your expressions are never transmitted to any server. The only persistent state is the URL hash, which stays on your machine unless you choose to share the link.
This site sets no cookies of its own. Google AdSense, which serves the display advertisements on this site, may set cookies on your device as part of its ad-serving process. You can manage or opt out of personalized advertising at Google Ad Settings.
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Questions about this privacy policy? Email privacy@cronexpressionbuilder.net.