Privacy policy

Last updated: 15 November 2026

Chalkmind is a whiteboard app for teachers and students. This policy explains what data the app handles and why. If you have a question, email [email protected].

The short version

• Your boards, notes and imported PDFs are stored on your device.
• Nothing leaves your device unless you use an AI feature. When you do, only what is needed for that request is sent.
• There are no ads, no advertising trackers and no sale of data.

Data stored on your device

Boards (your writing, shapes, text and graphs), PDFs you import, and app settings are saved in the app's private storage on your device. Uninstalling the app deletes them. Chalkmind does not upload them to us.

AI features

Some features use an AI model: solving a problem the device can't solve on its own, the AI Assistant (explain, hint, check my work, quizzes and similar), diagram generation, and looking up highlighted text in a PDF. When you use one, the app sends the content needed for that request:

• an image of the part of the board you selected or are working on, or of the highlighted area of a PDF page;
• typed text from the board or PDF that is relevant to the request, and the question or topic you typed;
• a photo you choose to attach;
• for follow-up questions, the last few messages of that conversation.

Requests are processed by our AI provider, OpenRouter, which passes them to the AI model that produces the answer (for example a Google Gemini model). Their handling of request data is governed by their own policies. We use these requests only to give you the answer. Please don't include personal information about yourself or others in content you send to the AI.

What we don't do

• No advertising or advertising identifiers.
• No analytics or tracking SDKs in the app.
• No accounts are required to use the app.
• We don't sell or share personal data for marketing.

Permissions

Chalkmind uses internet access for AI features. It opens files (PDFs, images) only when you choose them in the system file picker, and only reads the files you pick.

Children and schools

Chalkmind is designed for learning and can be used by students. We recommend that younger students use AI features with a teacher or parent, and that schools review this policy before use.

Your choices

• Don't use AI features if you don't want content sent for processing; the whiteboard works without them.
• Delete boards in the app, or uninstall the app to remove all local data.
• Contact us at [email protected] with any privacy request.

Changes

If we add features that handle data differently (for example optional sign-in or cloud backup), we will update this page before they are released and change the date above.