Privacy Policy
Last updated: October 2025
Summary
- Your calculator inputs stay in your browser. We do not receive them.
- No account required. No login, no password.
- No sale or rental of data. We don’t sell, rent, or trade your data.
- Analytics Cookies Used. We use privacy-focused Cloudflare and standard Google Analytics to understand traffic. You can opt out of Google's tracking.
What We Collect
By default, the site does not collect personal information. The estimator runs locally in your browser using JavaScript. We do not store your responses on a server.
Optional Contact
If you use our contact us form (e.g., feedback or support), we receive your email address and message contents. We use this only to respond, and delete messages after resolution unless required to retain them by law.
Donations
If you click “Donate,” you may be redirected to a payment provider (e.g., PayPal). That provider’s privacy policy applies. We do not receive your payment card numbers. We may receive your name, email, and the donation amount from the provider for receipts and compliance.
Analytics
We use two services to understand traffic patterns and improve our website: Cloudflare Web Analytics and Google Analytics.
Cloudflare Web Analytics
We use Cloudflare Web Analytics for basic traffic measurement. This privacy-first service does not use cookies, collect personal data like your IP address, or track your activity across other websites. We only see aggregate, anonymized data, and because individual users are not tracked, an opt-out is not necessary.
Google Analytics
We also use Google Analytics to understand how visitors engage with our site in more detail. Google Analytics uses cookies to collect standard internet log information and visitor behavior information in an anonymous form, such as the pages you visit and the time you spend on the site. This helps us compile statistical reports on website activity.
You can learn more about how Google uses this data at Google's Privacy & Terms site. To prevent your data from being used by Google Analytics, you can install the Google Analytics Opt-out Browser Add-on.
Children’s Privacy
This site is intended for parents and caregivers. It is not directed to children under 13. If you believe a child has provided us personal information directly, please contact us and we will delete it.
Security
We use standard safeguards appropriate for a static, client-side site. No method of transmission or storage is 100% secure.
International Users
If you access the site from outside the U.S., you understand information may be processed in the U.S. or other countries/regions where protections may differ from your local laws.
Your Choices
- You can use the estimator without providing any personal data to us.
- You can clear your browser cache to remove locally stored data (if any features later store preferences).
- You can contact us to request deletion of emails you sent to us.
Changes to This Policy
We may update this policy to reflect changes to the site. The “Last updated” date will change accordingly.
Contact
Questions? Contact us here.
If you are worried about an infant’s immediate health or safety, call emergency services and seek care right away.