Privacy Policy

Last updated · May 2026

1. Introduction

This Privacy Policy explains how Weekbu processes personal data when using the application. Weekbu is designed as an offline-first budgeting app, meaning your financial data is stored locally on your device whenever possible.

2. Controller

Christian Sautner Scharnhorststraße 41a 04275 Leipzig Germany Email: CSA_@outlook.de

3. Local Data Storage

Weekbu stores budgeting and financial data exclusively on your device using local storage technologies. This includes expenses, budgets, categories, settings, and related app data. No financial or budgeting information is stored on external servers or cloud databases.

4. Authentication

If you choose to create an account or sign in, Weekbu uses Firebase Authentication to provide secure login functionality. Depending on the selected sign-in method, the following information may be processed: • Email address • Google account information • Authentication identifiers

5. Google Sign-In

When using Google Sign-In, authentication is handled by Google. Google may process personal information according to its own privacy policies. Google Privacy Policy: https://policies.google.com/privacy

6. Guest Mode

Weekbu also offers a guest mode. When using guest mode, no account registration is required and all data remains locally stored on the device.

7. Data Security

Appropriate technical and organizational measures are implemented to protect stored data against unauthorized access, loss, or misuse. Because financial data is stored locally on the device, users are responsible for securing access to their device.

8. Legal Basis (GDPR)

Personal data is processed based on the following legal grounds under the General Data Protection Regulation (GDPR): • Art. 6(1)(b) GDPR — performance of a contract or provision of app functionality • Art. 6(1)(f) GDPR — legitimate interests in secure and reliable app operation • Art. 6(1)(a) GDPR — consent, where required

9. Your Rights

Under GDPR, you may have the following rights: • Right of access • Right to rectification • Right to erasure • Right to restriction of processing • Right to data portability • Right to object • Right to withdraw consent • Right to lodge a complaint with a supervisory authority

10. Changes to This Policy

This Privacy Policy may be updated to reflect legal, technical, or functional changes within the application. The latest version will always be available inside the app.

11. Contact

If you have questions regarding this Privacy Policy, please contact: CSA_@outlook.de