Privacy Policy
Last updated: May 2026
Overview
PeptiTools is designed to collect as little data as possible. You do not need an account to use the calculator. No personally identifiable information is required or collected.
Calculator inputs
Vial size, BAC water volume, dose, and syringe type inputs are processed entirely in your browser. This data is not transmitted to our servers. The calculator may save your last-used values in your browser's localStorage so the calculator reopens with your previous settings, this data stays on your device and is never sent anywhere.
Analytics
This Site uses Google Analytics 4 (GA4) to collect anonymous usage data: pages visited, session duration, browser type, and general geographic region (country/city level). GA4 does not collect your name, email, or calculator inputs. IP addresses are anonymized. You can opt out of GA4 tracking by using a browser extension such as the Google Analytics Opt-out Add-on, or by enabling "Do Not Track" in your browser settings.
Cookies
Google Analytics sets cookies to distinguish sessions and measure traffic. No other first-party cookies are set by PeptiTools. You can clear or block cookies at any time via your browser settings. Blocking analytics cookies does not affect calculator functionality.
Affiliate links
Pages with affiliate links to third-party suppliers (e.g., Amino Asylum, Peptide Sciences) may set cookies on the third-party site when you click through. PeptiTools does not control third-party cookies. Refer to each supplier's privacy policy for details.
Third-party services
The Site is hosted on Vercel, which may log standard server access data (IP address, request timestamp, referrer) as part of normal infrastructure operation. Vercel's privacy policy applies to this data. External links to PubMed, FDA.gov, and other reference sites are governed by those sites' own policies.
Children
This Site is not directed at children under 13. We do not knowingly collect any information from children.
Changes to this policy
This policy may be updated periodically. The "Last updated" date above reflects the most recent revision. Continued use of the Site after changes constitutes acceptance of the revised policy.
Contact
Privacy questions or requests can be sent to contact@peptitools.com.