Math Buddy Privacy Policy
Last updated: 2026-07-28
Math Buddy (“the App”) is a local-only math tutoring app for kids on Android. This policy describes what data the App handles and how.
Summary
- Math solving and tutoring run on your device.
- The App does not create accounts or require sign-in.
- Photos and camera images are used only to read math problems.
- Network access is used only for an optional, parent-gated model download over Wi‑Fi.
- We do not sell personal data.
Data the App processes on device
| Data | Purpose | Leaves the device? |
|---|---|---|
| Camera / gallery images of worksheets | On-device OCR to read the problem | No (processed locally; not uploaded for inference) |
| Recognized problem text / LaTeX | Confirm and tutor | No |
| Parent PIN (hashed locally) | Gate model downloads and answer reveal | No |
| App settings (teach mode, etc.) | Preferences | Stored on device only |
Optional model download
Parents can download a large on-device language model (~1 GB) from a public model host (e.g. Hugging Face) over Wi‑Fi after entering the parent PIN. That download uses the network. Inference after download stays on the phone and is not sent to our servers.
The App does not require a model download to install; some features need a model loaded locally.
Permissions
- Camera — capture worksheet photos.
- Photos / media images — pick an existing photo of a problem.
- Internet / network state — optional Wi‑Fi model download and connectivity checks for that download only.
Children’s privacy
Math Buddy is designed for educational use by children with a parent or guardian. The App does not knowingly collect personal information from children for advertising or profiling. There is no in-app advertising network in this build.
Third parties
Optional model files may be fetched from third-party model hosts. Their terms and privacy policies apply to that download traffic. The App does not send tutoring conversations or photos to those hosts for solving.
Data retention and deletion
Problem images and text remain on the device under the App’s storage. Uninstalling the App removes App-local data (subject to OS behavior). Downloaded model files are stored in App storage and removed when the App is uninstalled or when you delete them in Models settings (if available).
Changes
We may update this policy. The “Last updated” date at the top will change when we do.
Contact
For privacy questions about Math Buddy, contact: willson2019pos@gmail.com.