Privacy Policy

Last updated: October 23, 2026

Written by Nan Liang, Independent developer · Medical review: pending publication · How we review content

The short version

Everything you type into ExpectCalc calculators — dates, weights, hCG values — is processed entirely in your browser and never transmitted to us or to any third party. We could not see your inputs if we wanted to, and we do not want to.

What we collect

Server logs: like virtually every website, the hosting provider keeps standard technical logs (IP address, user agent, requested page, timestamp) for security and abuse prevention. These logs are not joined to any calculator inputs and are not used for profiling.

Privacy-focused analytics: we use Cloudflare Web Analytics, a cookieless, no-cross-site-tracking analytics service that reports aggregate page-view counts. It does not set tracking cookies, does not fingerprint devices, and is configured to collect no personal data beyond aggregate usage. We do not use Google Analytics at launch.

What we do not do

No advertising networks or third-party trackers at launch; no sale or sharing of personal data; no email newsletters (there is nothing to sign up for); no accounts; no health-data storage of any kind. If advertising is added in the future to sustain hosting, this policy will be updated first, and ad configuration will exclude interest-based categories sensitive under applicable law.

Your rights and contact

Because we hold no personal data about you beyond transient server logs, there is typically nothing to access, correct, or delete — but for any privacy question, request, or complaint, contact support@expectcalc.com and we will respond promptly.