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Privacy Policy

Last updated: May 2026

1. Who we are (Controller)

Fuelbit is a mobile application for AI-powered food and nutrition tracking, operated as a sole proprietorship (Einzelunternehmen) in Germany.

Controller under Art. 4(7) GDPR:

[YOUR FULL NAME]

[STREET AND HOUSE NUMBER]

[POSTCODE] Weimar, Germany

Email: iffywurst@gmail.com

2. What data we collect

  • Account data: email address used to register (via Supabase Auth)
  • Meal data: photos you upload, food labels, and nutrition values we calculate
  • Usage data: anonymous analytics events (via PostHog, EU region) to understand how the app is used — no personal identifiers
  • Water logs and fasting session timestamps stored locally and in your account

3. How we use your data

  • To provide the core app functionality (meal tracking, calorie history, goals)
  • To analyse food photos using Groq AI (images are processed and not stored by Groq)
  • To send optional local push notifications you configure
  • To improve the app through anonymous usage analytics
We do not sell your data. We do not use your data for advertising.

4. Food photos

Photos you upload are stored in Supabase Storage in the EU (eu-west-1). Photos are sent to Groq Cloud API for food analysis over an encrypted connection. Groq does not store images. You can delete any meal — which also deletes the photo — at any time within the app.

5. Data storage and security

All data is stored on Supabase servers located in the EU. Data is encrypted in transit (HTTPS/TLS) and at rest. We use Row-Level Security so your data is only accessible by your account.

6. Your rights (GDPR)

If you are in the EU/EEA, you have the right to:
  • Access your data (Art. 15)
  • Correct inaccurate data (Art. 16)
  • Delete your account and all associated data (Art. 17)
  • Export your data in a portable format (Art. 20)
  • Object to (Art. 21) or restrict (Art. 18) processing
  • Withdraw consent at any time (Art. 7(3)) — this does not affect the lawfulness of processing carried out before withdrawal
To exercise these rights, use the "Delete Account" or "Export Data" options in the Profile tab of the app, or contact us directly.

You also have the right to lodge a complaint with a supervisory authority (Art. 77). The authority responsible for us is the Thüringer Landesbeauftragter für den Datenschutz und die Informationsfreiheit (TLfDI), Häßlerstraße 8, 99096 Erfurt. You may also contact the supervisory authority of your own place of residence.

7. Legal bases & what is required

  • Account + core health data (weight, goals, food logs): processed on your explicit consent (Art. 6(1)(a) + Art. 9(2)(a)) and to perform the contract (Art. 6(1)(b)). This data is required to use the app — without it the service cannot be provided.
  • Payment data: required to take out a paid subscription (Art. 6(1)(b)).
  • Security / sign-in logs: our legitimate interest in security and fraud prevention (Art. 6(1)(f)).
  • Analytics (PostHog): optional, only with your consent (Art. 6(1)(a)); declining has no effect on your use of the app.

8. Data retention

  • Account, health data and food logs: kept until you delete your account, plus a short grace/backup window of about 30 days.
  • Food photos: deleted after analysis or, where linked to a meal entry, for the lifetime of that entry / account.
  • Server and sign-in logs: 7–30 days.
  • Payment, invoice and tax records: retained for 8 years as required by German law (§ 147 AO, § 257 HGB).
  • Backups: overwritten on a limited rotation.

9. Automated processing of food photos

Food photos are analysed by an automated AI system (Groq) to estimate nutritional values. These results are estimates, may be inaccurate, and are not medical or dietary advice. You review and can adjust every result, so this is not a solely-automated decision producing legal or similarly significant effects within the meaning of Art. 22 GDPR.

10. Third-party services

  • Supabase — database and auth (EU servers). Privacy policy
  • Groq Cloud (USA) — AI food analysis (image sent, not stored). Transfer to the USA is safeguarded by EU Standard Contractual Clauses (Art. 46(2)(c) GDPR); a copy of the safeguards is available on request. Privacy policy
  • PostHog — anonymous analytics (EU region, no PII). Privacy policy

11. Children

Fuelbit is not directed at children under 16. We do not knowingly collect data from anyone under 16.

12. Changes to this policy

We may update this policy. Significant changes will be notified via the app. Continued use after changes means you accept the updated policy.

13. Contact

For privacy questions or data requests, email us at iffywurst@gmail.com. You can also use the “Export my data” and “Delete account” features directly in the app's Profile tab.