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Privacy Policy

Last updated: December 2025

1. Data Controller

UG108
Meissner Strasse 108
01445 Radebeul
Germany

Email: privacy@ug108.de

2. Overview of Data Processing

smartshopr is a shopping list app with AI-powered receipt analysis. To provide these services, we process certain personal data.

In brief: We only store data necessary for app functionality. Receipt images are only transmitted to OpenAI for analysis and are not permanently stored.

3. What Data We Collect

3.1 Account Data

During registration, we collect:

  • Email address
  • Encrypted password
  • Registration timestamp

Legal basis: Art. 6(1)(b) GDPR (contract performance)

3.2 Shopping Lists and Items

To provide core functionality, we store:

  • Names of your shopping lists
  • Products and quantities entered
  • Category assignments
  • Completion status of items

Legal basis: Art. 6(1)(b) GDPR (contract performance)

3.3 Supermarket Data

When you save supermarkets:

  • Supermarket name
  • Address (optional)
  • Individual category order

Legal basis: Art. 6(1)(b) GDPR (contract performance)

3.4 Expenses and Receipts

For expense tracking, we store:

  • Supermarket name
  • Purchase amount
  • Purchase date

Important: Receipt images are not permanently stored. They are only temporarily transmitted for AI analysis.

Legal basis: Art. 6(1)(a) GDPR (consent)

4. Third-Party Service Providers

4.1 Supabase (Authentication & Database)

We use Supabase as our backend infrastructure for user authentication and data storage.

  • Provider: Supabase Inc., 970 Toa Payoh North #07-04, Singapore 318992
  • Server location: Frankfurt, Germany (eu-central-1)
  • Data processed: Account data, shopping lists, supermarkets, expenses
  • Privacy policy: supabase.com/privacy

Legal basis: Art. 6(1)(f) GDPR (legitimate interest in reliable infrastructure)

4.2 OpenAI (AI Receipt Analysis)

For automatic receipt recognition, we use the OpenAI Vision API.

  • Provider: OpenAI, L.L.C., 3180 18th Street, San Francisco, CA 94110, USA
  • Data processed: Receipt images (temporary)
  • Purpose: Automatic extraction of supermarket name, amount, and date
  • Storage at OpenAI: Images are not used for training and are deleted after processing
  • Privacy policy: openai.com/privacy
Note on data transfer to the USA: OpenAI is based in the USA. Transfer is based on Standard Contractual Clauses (SCCs) pursuant to Art. 46(2)(c) GDPR.

Legal basis: Art. 6(1)(a) GDPR (consent when using the receipt scanner)

4.3 Mailgun (Email Delivery)

For sending emails (registration confirmation, password reset, notifications for shared lists), we use Mailgun.

  • Provider: Mailgun Technologies, Inc., 112 E Pecan St. #1135, San Antonio, TX 78205, USA
  • Server location: EU (for EU customers)
  • Data processed: Email address, email content
  • Privacy policy: mailgun.com/legal/privacy-policy

Legal basis: Art. 6(1)(b) GDPR (contract performance)

4.4 OneSignal (Push Notifications)

For push notifications (e.g., changes to shared lists, budget expenses), we use OneSignal.

  • Provider: OneSignal, Inc., 2850 S Delaware St Suite 201, San Mateo, CA 94403, USA
  • Data processed: Device token, user ID, notification content
  • Purpose: Delivery of push notifications to your device
  • Privacy policy: onesignal.com/privacy_policy
Note: Push notifications are optional. You can disable them at any time in your device settings or in the app.

Legal basis: Art. 6(1)(a) GDPR (consent by enabling push notifications)

5. Shared Lists

When you share a shopping list with other users, the following data becomes visible to invited persons:

  • List name
  • All items on the list
  • Your email address (as list owner)

Legal basis: Art. 6(1)(a) GDPR (consent through active sharing)

6. Data Retention

  • Account data: Until account deletion
  • Shopping lists: Until manual deletion by you
  • Expenses: Until manual deletion by you
  • Receipt images: Not stored, only temporarily transmitted for analysis

7. Your Rights

Under the GDPR, you have the following rights:

  • Access (Art. 15): You can request information about your stored data
  • Rectification (Art. 16): You can have incorrect data corrected
  • Erasure (Art. 17): You can request deletion of your data
  • Restriction (Art. 18): You can request restriction of processing
  • Data portability (Art. 20): You can receive your data in a common format
  • Objection (Art. 21): You can object to processing
  • Withdrawal (Art. 7): You can withdraw consent at any time

To exercise your rights, contact us at: privacy@ug108.de

8. Data Deletion

You can delete your account and all associated data at any time in the app settings. Upon account deletion, the following will be permanently deleted:

  • Your user account
  • All your shopping lists and items
  • All saved supermarkets and layouts
  • All expense entries

9. Cookies and Tracking

The smartshopr app uses no cookies and no tracking. We do not analyze how you use the app and do not sell data to third parties.

10. Data Security

We employ technical and organizational measures to protect your data:

  • Encrypted transmission (TLS/HTTPS)
  • Encrypted password storage
  • Row Level Security (RLS) in the database
  • Server location in the EU (Frankfurt)

11. Right to Lodge a Complaint

You have the right to lodge a complaint with a data protection supervisory authority. The authority responsible for us is:

Saxon Data Protection Commissioner
Devrientstrasse 5
01067 Dresden, Germany
www.saechsdsb.de

12. Changes to This Privacy Policy

We reserve the right to update this privacy policy to reflect changes in legal requirements or service modifications. The current version can always be found on this page.

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