Privacy
Your schedules
Cron expressions you type, the plain-English explanation, the run times and the configuration snippets are all worked out in your browser. The cron calculation runs locally; using the optional account flow is separate from entering a schedule.
Preview links
Copy link to this preview puts the expression and time zone in the link’s address (for example ?expr=30+9+*+*+1-5&tz=Europe/Berlin). Anyone you send it to can see them, and like any page address it reaches the web host when the link is opened. Don’t put anything private in an expression you share.
What is stored
The cron calculator starts from its example when reloaded. If you choose to register or sign in, the existing account service sends your account details to Supabase Auth, uses email delivery for account messages, and may retain an authentication session in browser storage. Registration is optional; it is not required for cron calculations. No subscription checkout is enabled by this calculator release.
Analytics
This site includes a statistics script that is only enabled after consent, but it does not currently run on this domain and collects no statistics.
Hosting
The site is hosted on Cloudflare, which, like any web host, processes technical request data such as IP address and browser type to deliver the pages.
Last updated: 19 October 2026