Last Updated: January 1, 2026

At BioStacks, we are committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our services, including our web app and our mobile app (which may load the web app in a WebView).

1. Information We Collect

Personal Information: When you create an account, we collect information such as your name, email address, and profile information.

User Content: We collect information you provide when creating supplement stacks, comments, and reviews.

Usage Data: We may collect information about how you interact with our services, such as the pages you view, the actions you take, and basic device/browser information. This helps us understand usage patterns and improve the product.

Authentication Data: When you sign in with Google, we receive basic profile information from your Google account.

Health & Wellness Information: When you use BioStacks, you may provide or generate information related to health and wellness (for example: supplement stacks you create, your selected health goals, age group, and similar preferences). This information is used to provide the core functionality of the app (such as stack analysis and personalized views).

Barcode/Camera Data: If you use barcode scanning features, the app may request access to your device camera. We do not store your camera feed; scanning is used to detect a barcode and look up supplement information.

2. How We Use Your Information

We use the information we collect to:

Provide, maintain, and improve our services
Process your account registration and authenticate your identity
Personalize your experience on BioStacks
Respond to your comments, questions, and requests
Send you notifications and updates about our services
Monitor and analyze trends, usage, and activities in connection with our services
Detect, investigate, and prevent fraudulent transactions and other illegal activities

3. Information Sharing and Disclosure

We may share your information in the following circumstances:

With service providers who perform services on our behalf
With third-party providers you choose to interact with (for example, when you click outbound links to retailers)
To comply with legal obligations
To protect and defend our rights and property
With your consent or at your direction

We do not sell, rent, or trade your personal information to third parties for their marketing purposes.

4. Data Storage and Security

We use Supabase, a secure database platform, to store your information. We implement appropriate security measures to protect your personal information from unauthorized access, alteration, disclosure, or destruction.

However, please be aware that no method of transmission over the Internet or method of electronic storage is 100% secure, and we cannot guarantee the absolute security of your information.

5. Your Data Rights

Depending on your location, you may have certain rights regarding your personal information, including:

The right to access personal information we hold about you
The right to request correction of inaccurate information
The right to request deletion of your account and personal information
The right to object to processing of your information
The right to data portability

To exercise these rights, please contact us at hello@biostacks.co.

If you request account deletion, we will delete or anonymize your personal information within a reasonable time, subject to any legal, security, or operational retention needs (for example, retaining limited logs for fraud prevention or debugging).

6. Analytics and Tracking

We use analytics and diagnostics tools to understand usage and improve reliability, including:

PostHog for product analytics and session replay, to help us understand how people use the app and improve UX.
Sentry for error reporting and diagnostics, to help us detect and fix crashes and bugs.

These tools may collect technical information such as device/browser type, pages visited, timestamps, error messages, stack traces, and related diagnostic metadata. We use this information to improve product performance and reliability.

Session replay is enabled and configured to mask input fields and sensitive UI regions. We do not intentionally record the contents of text inputs or payment fields, and we avoid sending direct identifiers such as email addresses to analytics providers.

7. Cookies and Local Storage

We use cookies and browser storage for essential functionality and to improve your experience:

Authentication: To remember your login state
Preferences: To store your website preferences
Analytics & Diagnostics: To measure usage and help troubleshoot issues

You can instruct your browser to refuse all cookies or to indicate when a cookie is being sent. However, if you do not accept cookies, you may not be able to use some portions of our service.

8. Affiliate Links and Third-Party Sites

BioStacks may provide links to third-party websites (for example, retailers such as iHerb or Amazon) to help you find products. These links may sometimes be affiliate links, meaning we may earn a commission if you make a purchase, at no additional cost to you.

When you click an outbound link, you will be leaving BioStacks. Your interaction with third-party sites is governed by their own privacy policies and terms.

9. Children's Privacy

Our services are not intended for individuals under the age of 18. We do not knowingly collect personal information from children under 18. If we learn we have collected personal information from a child under 18, we will delete that information.

10. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date at the top of this Privacy Policy.

You are advised to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.

11. Contact Us

If you have any questions about this Privacy Policy, please contact us at hello@biostacks.co.

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