Privacy Policy
Last Updated: September 28, 2026. This policy outlines our data handling practices, client-side storage architecture, and privacy commitments.
1. Zero Registration & Account Requirement
FreePeptideCalculator.com is designed as a friction-free, public utility. We do not require account registration, login credentials, or email submission to access any of our reconstitution calculators, blend tools, or guide articles. We do not collect or maintain user account profiles or email subscriber databases.
2. Client-Side Data Storage (Save-a-Dose Feature)
When you use our interactive "Save Dose" card feature to store custom reconstitution parameters (e.g., peptide mass, BAC water volume, desired dose), this data is stored exclusively inside your web browser’s `localStorage` API.
This data is strictly client-side. It resides on your local device and is never transmitted to, stored on, or processed by our web servers or any external third-party servers. Clearing your web browser's cache or local site data permanently deletes your saved dose cards.
3. Web Analytics & Third-Party Services
Google Analytics 4 (GA4)
We use Google Analytics 4 (Measurement ID: G-6LL8ED67GF) to measure aggregate, anonymous site traffic patterns (such as page views, country-level geographic distribution, and device categories). This telemetry helps us optimize calculator performance and identify technical errors. IP anonymization is enabled by default, and we do not collect personal identifiable information (PII) or track user identity across non-affiliated websites.
4. User Rights & Data Requests
Because we do not store personal data on external servers, we hold no user profiles to export or delete. However, if you have questions regarding data privacy, cookie preferences, or wish to submit an inquiry under applicable privacy regulations (such as GDPR or CCPA), you can contact us via our Contact Page.