Privacy Policy
Last updated: September 22, 2026
GestationCalc ("we," "us," or "our") operates the website gestationcalc.com. This Privacy Policy explains how we collect, use, disclose, and protect your information when you visit our website.
Information We Collect
Automatically Collected Information
When you visit GestationCalc, we automatically collect certain information through Google Analytics 4 (GA4), including:
- Browser type and version
- Operating system
- Pages visited and time spent on pages
- Referring URLs
- General geographic location (country/city level)
- Device type (desktop, mobile, tablet)
This data is anonymized and aggregated. We do not collect personally identifiable information through analytics.
Information You Provide
If you use our contact form, we collect your name, email address, and message content. This information is used solely to respond to your inquiry.
Local Storage
Our calculators use your browser's localStorage to save your most recent calculation (breeding date and breed selection) so it persists between visits. This data is stored entirely on your device and is never transmitted to our servers.
Cookies
We use cookies for the following purposes:
- Analytics: Google Analytics 4 uses cookies to distinguish users and track sessions. These are first-party cookies with a 2-year expiration by default.
- Advertising: We may serve Google AdSense ads, which use cookies to serve relevant advertisements. See Google's privacy policy for details.
You may opt out of Google Analytics tracking by installing the Google Analytics opt-out browser add-on.
How We Use Your Information
- To understand how visitors use our site and improve the user experience
- To respond to contact form inquiries
- To serve relevant advertisements via Google AdSense
Third-Party Services
We use the following third-party services:
- Google Analytics 4: Web analytics (Google Privacy Policy: policies.google.com/privacy)
- Google AdSense: Advertising (Google Privacy Policy: policies.google.com/privacy)
- Netlify: Web hosting (Netlify Privacy Policy: netlify.com/privacy)
Data Retention
Analytics data is retained for 14 months (the GA4 default). Contact form submissions are retained for 1 year. You may request deletion of any data by contacting us.
Your Rights (GDPR)
If you are located in the European Economic Area, you have the right to:
- Access the personal data we hold about you
- Correct inaccurate personal data
- Request deletion of your personal data
- Object to processing of your personal data
- Request restriction of processing
- Data portability
To exercise these rights, please contact us via the contact form.
Cookies and Your Consent Choice
On your first visit we ask whether to allow analytics cookies. Your choice is stored in your browser and can be changed any time by clearing your browser storage for this site. If you decline, analytics never loads and we collect no analytics data from your visit.
Your Rights (CCPA — California)
If you are a California resident, you have the right to know what personal information is collected about you, request deletion of your personal information, opt out of the sale of personal information, and be free from discrimination for exercising these rights. We do not sell personal information. To make a request, contact us via the contact form.
Children's Privacy
GestationCalc is not directed at children under 13. We do not knowingly collect personal information from children under 13.
Changes to This Policy
We may update this Privacy Policy periodically. Changes will be posted on this page with an updated "Last updated" date.
Contact
Questions about this Privacy Policy? Use our contact form.