Privacy Policy
Vanderwaals (“the app”, “we”, “us”) is an open-source Android wallpaper app that learns your aesthetic preferences using on-device machine learning. This policy explains what data the app does and does not collect, and how it behaves on your device.
1. Executive Summary
Vanderwaals is designed to respect your privacy. It requires no user accounts, sends no telemetry, and processes all machine learning evaluations locally on your device. The only network use is one-way download of the public wallpaper catalog and manifest; no data ever leaves your device.
2. Information Collection and Use
| Data Type | Collection Status | Purpose / Storage Location |
|---|---|---|
| Personal Data (Name, email, accounts) |
Never collected | N/A. The app does not contain account registration. |
| Local Wallpapers (Images on your device) |
Processed locally | Used to extract color palettes and features. Handled entirely in private memory and never written to disk or sent online. |
| Aesthetic Model Weights (Preference scoring vectors) |
Stored locally | Stored in the app's local private sandbox directory. This data represents your learned taste profiles. |
| Interaction History (Like/dislike actions) |
Stored locally | Stored in a private on-device SQLite database to calculate model updates. |
3. On-Device Machine Learning
The wallpaper personalization system uses a lightweight MobileNetV4-Conv-Small neural network model. It generates a 1280-dimension vector representation of images to determine composition styles.
This inference execution runs completely in the local Android process space. No cloud-based servers are ever contacted.
4. Security and Android Permissions
The app requests standard permissions to query installed wallpaper components and to download
the public wallpaper catalog. However, the app explicitly removes the following unused
permissions from its internal manifest during builds to ensure safety:
READ_EXTERNAL_STORAGE, READ_MEDIA_IMAGES, and
READ_PHONE_STATE.
5. Children's Privacy
Vanderwaals is a utility app and is not directed at children. The app does not collect any data from anyone, including children.
6. Open Source Verification
The source code of the application, including the manifest permissions and dependencies, is completely public and audit-ready at the official project repository:
github.com/avinaxhroy/Vanderwaals
7. Contact
For questions or verification assistance, please reach out to:
- Email: hi@avinas.me
- Issues: github.com/avinaxhroy/Vanderwaals/issues