Privacy Policy for Stackwise

Effective Date: February 24, 2026

Welcome to Stackwise. This Privacy Policy is designed for users residing in the United States and explains what data we collect, how it is used, and who we share it with.

1. Information We Collect

We collect information based on how you interact with the Stackwise platform.

For All Website Visitors: When you browse our site, we collect data regarding your activity, including:

The search queries you perform on our platform.
Basic analytics and usage data regarding how you navigate our website.

For Registered Users: When you create an account with Stackwise, we collect the personal information required to maintain your account (such as your name and email address). Additionally, we collect data tied to your platform usage, including:

Supplements you save to your profile.
Custom ingredient filters you create.
Search queries you perform while logged in.
Notes you take on specific supplements.

To keep Stackwise running, we sell access to certain platform usage insights to a strictly vetted group of industry partners.

Who we share data with: We only share data with supplement manufacturers, supplement brands, and lab testing companies. Who we do NOT share data with: We do not work with data brokers or resellers, general retailers, data analytics firms, or medical researchers.

We sell data access to our partners under strict privacy constraints:

No Personally Identifiable Information (PII): We will never intentionally share your name, email address, or other direct PII with our partners. The usage insights provided to them (such as what searches are being performed or which supplements are being saved) are stripped of your direct identifying information.
No Reselling: Our agreements strictly prohibit our partners from reselling the data access they purchase from us.

3. Your Choices: Opt-Out and Deletion

Because the de-identified insights we share with our partners are core to the Stackwise business model, we do not offer an opt-out for data sharing while you maintain an active account. By using Stackwise, you consent to the collection and sharing of your usage data as outlined in this policy.

However, you retain ultimate control over your presence on our platform:

Account and Data Deletion: You may delete your account at any time. If you choose to delete your account, your profile and all associated personal data (including your name, email, saved supplements, filters, and notes) will be permanently deleted from our active systems.

4. Data Security

While no system is completely infallible, we implement reasonable and industry-standard security measures to ensure that your PII is kept secure and separate from the usage data we share with our partners. We are committed to ensuring your direct identity is never exposed intentionally.

5. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes to our practices or for other operational, legal, or regulatory reasons. We will notify you of any material changes by updating the “Effective Date” at the top of this policy.

6. Privacy Inquiries & Deletion Requests