Privacy Policy
Short version: the times you enter never leave your browser.
Short version
Your wake time, bedtime and age are processed in your browser and never sent to this server. There is no account, no cookie set by these pages, and no analytics script.
What happens on your device
- The cycle arithmetic is part of the page's script, so the times are calculated locally.
- Inputs stay in the form fields; nothing is written to local storage and nothing persists between visits.
- No network request is made while you type — you can confirm this in the browser's network panel.
- Reloading the page resets the fields to their defaults.
What the server records
Like any web server, ours writes one access-log line per request: the address it came from, the time, the URL and the browser's user-agent string. It does not contain your inputs, because they never leave the page. The log is used to detect abuse and to confirm the pages are reachable, and it is not combined with anything else.
Third parties
No fonts, scripts, images or styles are loaded from other domains, so no other company sees your visit through these pages. The domain is served through a content delivery network, which necessarily handles the request in order to deliver the page; that is transport, not tracking by the page.
Health information
Age is the only health-related field these calculators ask for, and it stays on your device. Because nothing is transmitted, there is no stored record to delete on request — and nothing to leak. If you would rather not enter it, the age table on the recommendations page can be read directly.
Links to other tools
This site hosts several independent tool groups on the same domain: GPA calculators, text generators, word solvers, calorie calculators and a herb photo checker. Each has its own behaviour and its own privacy page; the herb checker is the only one that uploads an image, and its page explains that separately.