VitaGuideVitaGuide

Privacy Policy for VitaGuide

Last updated: April 10, 2026

AI-Powered Recommendations and Data Sharing

What data we collect

When you use VitaGuide's quiz, we collect: age, biological sex, health goals, dietary preferences, current medications, health conditions, supplement usage, activity level, sun exposure, skin tone, and smoking status.

How we collect the data

This information is collected directly from you through the in-app quiz and through your interactions with features like the Interaction Checker and Compare tool.

All uses of the data

  • Generate personalized supplement recommendations via AI
  • Check drug-supplement interactions
  • Compare supplement products against your profile
  • Track your daily supplement adherence
  • Display estimated nutrient levels based on your adherence

Third-party sharing

Your quiz data is sent to Anthropic, PBC ("Anthropic"), the provider of the Claude AI service, for the sole purpose of generating personalized recommendations.

Anthropic processes your data under their API Terms of Service, which:

  • Prohibit retention of personal data after processing your request
  • Prohibit use of your data to train AI models
  • Require industry-standard encryption and security measures
  • Provide protections equivalent to those described in this privacy policy

No other third parties receive your health data. Amazon affiliate links in the app use a developer tag to attribute purchases but do not transmit any of your personal or health data to Amazon.

Data retention

AI-generated recommendations are cached on our servers for up to 24 hours to improve performance. After 24 hours, cached data is automatically deleted. Your account data is retained until you delete your account, at which point all data is permanently removed.

User consent

Before your quiz data is sent to Anthropic's AI service, you are presented with a clear disclosure explaining what data will be shared, who it will be shared with, and how it will be used. You must explicitly agree before any data is transmitted. You may decline, and no data will be sent.

Data security

All data transmitted between VitaGuide and Anthropic is encrypted using HTTPS/TLS. Health data stored on our servers is encrypted at rest. Authentication tokens are stored in your device's secure keychain.

What We Collect

  • Quiz profile data (age, sex, diet, health goals, lifestyle factors) — used solely to generate your personalized supplement recommendations
  • Email address — only if you sign in with Google, used for account identification and saving your plans
  • Daily check-in data (supplement adherence, energy/sleep/mood ratings) — stored locally on your device in the mobile app, synced to your account only if signed in
  • Apple Health integration is not enabled in the current App Store build. If we enable it in a future iPhone release, VitaGuide would request resting heart rate, HRV, sleep, steps, and active calories only after you grant permission.

How We Use Your Data

  • Quiz data is sent to our AI recommendation engine (powered by Anthropic's Claude API) to generate personalized vitamin recommendations. This data is processed in real-time and is not stored by Anthropic.
  • Your saved plans and check-in history are stored in our database (Turso) if you have an account, so you can access them across devices.
  • If you choose to email a plan, we send the recipient address plus your plan and profile summary through our transactional email provider (Resend) or our SMTP mail service.
  • We use your data exclusively to provide and improve VitaGuide's recommendations. We do not use your data for advertising.

What We Do NOT Do

  • We do NOT sell your personal data to anyone
  • We do NOT share your health data with third parties for marketing
  • We do NOT serve ads or allow advertisers to access your data
  • We do NOT store Apple Health data on our servers in the current App Store build

Data Storage and Security

  • Account data is stored securely using Turso (SQLite-compatible cloud database) with encrypted connections
  • Authentication is handled via Google OAuth through NextAuth.js — we never see or store your Google password
  • Sensitive mobile data such as auth tokens uses encrypted device storage when Expo Secure Store is available in the running app environment
  • API communications use HTTPS encryption

Your Rights

  • You can delete your account and all associated data at any time from the app's Settings/More screen
  • You can use VitaGuide without creating an account — all data stays on your device
  • If Apple Health support is enabled in a future release, you will be able to revoke those permissions at any time through your iPhone's Settings

Children's Privacy

VitaGuide is not intended for children under 13. We do not knowingly collect data from children.

Health Disclaimer

VitaGuide provides educational information only. It is not medical advice. Always consult your healthcare provider before starting any supplement regimen.

Contact

For privacy questions or data deletion requests, visit our support page or email jglabsco@gmail.com.

Changes

We may update this policy from time to time. Changes will be posted on this page with an updated date.

Affiliate Links

Some product links in VitaGuide are affiliate links. When you purchase a product through these links, we may earn a small commission at no additional cost to you. Our supplement recommendations are generated based on your health profile and are never influenced by affiliate partnerships. We participate in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.