Privacy Policy

Effective date: March 2026

1. Introduction

Weisenheimer ("Every day a bit wiser") is a visual knowledge quiz app covering geography, art, nature, culture, design, and more. This Privacy Policy explains what data we collect, how it is stored, and how it is used.

By using Weisenheimer, you agree to the practices described in this policy.

2. Data We Collect

We collect only the minimum data necessary to provide the service:

Account information (if you sign in): your name, email address, and profile picture, as provided by your sign-in provider (currently Google). Sign-in is entirely optional.
Quiz progress: your scores and levels completed per category.

We do not collect:

Location data
Contacts or address book data
Device identifiers beyond what Firebase Authentication provides
Any data that tracks you across other apps or websites

3. How Data Is Stored

On your device: quiz progress is saved locally using browser storage (localStorage). This data stays on your device unless you sign in.
In the cloud (signed-in users only): progress is also stored in Google Firebase Firestore so it can sync across your devices. Firebase is a cloud database service operated by Google, with servers in the EU and US. For information on Google's data practices, see the Firebase Privacy and Security documentation.

4. How Data Is Used

To save and sync your quiz progress across sessions and devices
To display your name and profile picture when you are signed in

We do not:

Sell, share, or transfer your data to any third parties
Use your data for advertising or marketing purposes
Use analytics or tracking tools (no Google Analytics, no ad SDKs, no crash reporters)

5. Children's Privacy (COPPA)

Weisenheimer is designed for users of all ages, including children. We are committed to protecting children's privacy.

Sign-in is entirely optional — the app is fully functional without creating an account
We do not knowingly collect personal information from children under 13 without verifiable parental consent
If you are a parent or guardian and believe that your child under 13 has provided us with personal information, please contact us (see Section 9) and we will delete it promptly

6. Data Deletion

In the app: you can delete your account and all associated data at any time through Settings → Delete Account. This removes your data from both your device and our cloud database.
Progress only: you can clear all quiz progress without deleting your account via Settings → Reset All Progress.
By email: you can also request data deletion by contacting us at the address in Section 9.

7. Data Security

We use Firebase Authentication and Firestore security rules to ensure only you can access your data
All communication between the app and our servers is encrypted via HTTPS

8. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will update the effective date at the top of this page. We encourage you to review this policy periodically.

9. Contact

For questions about this policy, or to request deletion of your data, contact us at:
📧 weisenheimer.app@gmail.com

Weisenheimer — Every day a bit wiser.