Privacy

A calculator that keeps to itself.

Effective July 22, 2026.

The refill calculation runs in your browser. We do not create accounts, store calculator entries, put those entries into shareable URLs, or send pickup dates and supply values with analytics or feedback.

Privacy-first site analytics

We use Cloudflare Web Analytics to understand overall visits, popular pages, traffic sources, device types, and site performance. Cloudflare states that this service does not collect or use visitors’ personal data. We do not use Google Analytics or advertising trackers.

Anonymous product events

When you calculate a date or download a calendar reminder, the site records that the action occurred. The event does not contain your pickup date, days supplied, early-refill value, result, medication, or identity.

Optional feedback

You may tell us whether the calculator helped and leave an optional note. We store the vote, note, page, and time submitted. Please do not include medication names, prescription information, or personal health information. Feedback may be retained for up to 12 months to guide improvements.

Information handled by our host

Like most websites, our hosting and security provider, Cloudflare, may process routine request information such as IP address, browser type, requested page, and timestamps to deliver and protect the site. Calculator entries are not submitted with those requests.

Cookies and browser storage

The site does not use browser storage for calculator entries. It uses session storage only to avoid asking for feedback repeatedly during the same browser session. Cloudflare may use strictly necessary security mechanisms when needed to protect the service.

Calendar downloads and email

If you download a calendar reminder, the file is created in your browser and contains the estimated check-in date. Your calendar provider handles it under its own privacy terms. If you email us, we receive the information you choose to send; please do not include sensitive health information.

Changes and contact

We will update this page if the site’s data practices change. Privacy questions may be sent to privacy@whenismynextrefill.com.