Privacy Policy

1. What We Collect

We collect the following information when you use Structura:

• Account information: email address and display name provided at sign-up
• Assessment data: your answers and scores from the sustainability assessment
• Usage data: focus session logs, streak data, deadlines, and subject information you create
• Schedule data: daily routine information you optionally provide to personalise AI advice
• Billing data: subscription status (payment details are handled entirely by Stripe — we do not store card numbers)

2. How We Use Your Data

Your data is used to:

• Provide and personalise the Structura service
• Generate AI-powered study plans and recommendations
• Display leaderboard rankings (anonymously by default)
• Track your streak and session history
• Process subscription payments via Stripe
• Send transactional emails (account confirmation, password reset)

3. AI Processing

When you generate an AI optimization plan, your assessment scores and optional schedule information are sent to OpenAI to produce recommendations. This data is processed in accordance with OpenAI's privacy policy. We do not use your data to train AI models.

4. Data Sharing

We do not sell your personal data. We share data only with the following service providers:

• Supabase — database and authentication
• OpenAI — AI plan generation
• Stripe — payment processing

All providers are contractually bound to use your data only to provide their services to us.

5. Leaderboard and Groups

By default, you appear anonymously on the global leaderboard. You can choose to show your display name in your account settings. In study groups, only you can see your own name — all other members appear anonymously to you.

6. Data Retention

We retain your data for as long as your account is active. If you delete your account, your personal data is deleted within 30 days. Anonymised aggregate usage statistics may be retained indefinitely.

7. Your Rights

You have the right to:

• Access the personal data we hold about you
• Request correction of inaccurate data
• Request deletion of your account and data
• Export your data

To exercise any of these rights, email us at structuraengine@gmail.com.

8. Cookies

Structura uses cookies solely for authentication purposes (session management). We do not use tracking or advertising cookies.

9. Changes to This Policy

We may update this policy from time to time. We will notify you of significant changes via email or in-app notice. Continued use of Structura after changes constitutes acceptance.

10. Contact

For privacy-related questions or requests, email us at structuraengine@gmail.com.