Privacy Policy

Last updated: September 25, 2026

1. Overview

DoseWyz is a free, calculator-only website. There are no user accounts, no sign-up forms, and no fields on this site that ask for your name, email address, date of birth, or any other personal or health information. The numbers you type into a calculator (a peptide amount, a dose, a volume) are used only in your browser, on that page, to compute a result — they are never sent to our servers or stored by us.

2. Information we do not collect

We do not collect, store, or process any personally identifiable information through this website beyond the analytics described in Section 3. We do not use tracking cookies, advertising pixels, or third-party marketing trackers, and we do not sell or share any data with data brokers or advertisers.

3. Analytics we do use

We use Vercel Web Analytics and Vercel Speed Insights to understand aggregate traffic (for example, which pages are visited and how fast they load). They do not use cookies and do not track individuals across sites, and the data they report to us is aggregated rather than tied to an individual visitor identity.

We also use PostHog, a product-analytics service hosted in the United States, to understand how the calculators are used and how many visitors go on to install the DoseWyz app. PostHog gives your browser a random identifier, kept in your browser’s local storage, so that visits from the same browser can be counted together. That identifier is not linked to your name or email address, which this site never asks for.

PostHog records the pages you view and a short list of named events: that a calculator produced a result, with only the units and syringe scale you selected, and that you clicked a link to an app store. The numbers you type into a calculator are not sent to PostHog. They are removed from page addresses before anything leaves your browser, and no event includes them. There is no session recording: PostHog is configured not to record your screen, not to capture your clicks or typing automatically, and not to store your IP address. If your browser sends a Do Not Track signal, no PostHog events are sent.

4. Cookies

This site does not set cookies of its own, and its analytics providers are configured to operate without cookies. PostHog keeps its random identifier in your browser’s local storage instead; clearing this site’s data in your browser removes it. If that changes in the future, this policy will be updated to describe it.

5. Children’s privacy

DoseWyzis not directed at children, and we do not knowingly collect any information from children. Because the site collects no personal information in the first place, no children’s data is collected as part of normal use of the calculators.

6. Data retention

This site does not ask for your name, email address or any health information, so there is none of it for us to retain. Aggregate analytics data is retained by Vercel according to its own retention schedule. PostHog event data, tied only to the random identifier described in Section 3, is retained by PostHog according to its own retention schedule.

7. Your rights and data-deletion requests

If you believe any personal data about you has been collected through this site, or if you would like to request deletion of any data associated with you, contact us at kaue@kaueribeiro.com and we will investigate and honor the request.

8. Third-party links

Where this site links to outside content (for example, a blog post citing product labeling), those third-party sites have their own privacy practices, which we don’t control. We do not link to vendors or sellers of any compound referenced on this site.

9. Changes to this policy

We may update this Privacy Policy from time to time. Material changes will be reflected by updating the “Last updated” date above.

10. Contact

Questions about this policy, or data-deletion requests, can be sent to kaue@kaueribeiro.com.