Privacy Policy

Last updated: November 13, 2026

MacCrown is a native macOS dental CAD app for designing fixed restorations. We do not collect, store or transmit your data. Patient case data stays on your Mac.

1. Introduction

This policy explains how the MacCrown app and the maccrown.org website handle your data. We are committed to protecting the privacy of dental professionals and their patients.

2. Data we do not collect

MacCrown does not collect, store or transmit:

• Patient names, dates of birth or other identifying information
• Health records or insurance information
• Usage analytics or tracking telemetry
• Location data
• Device identifiers for tracking purposes

Crash capture is strictly opt-in (see Section 5) and contains no patient information.

3. Local data storage

All dental case data (3D scans, restoration designs, validation results, case parameters and the local patient-records database) is stored only on your Mac's local file system. This data never leaves your device unless you explicitly export or share it.

Case files are stored in locations you choose through standard macOS file dialogs. Auto-save checkpoints are stored in your Application Support folder and are deleted automatically on a clean shutdown.

4. No AI service integration, no third-party network calls

MacCrown contains no built-in AI service integration and makes no network calls to third-party services. All geometry generation and validation run locally on your Mac. The app's only network communication is with Apple services (App Store purchase verification).

MacCrown offers a local automation surface for advanced workflows: a command-line mode and a Model Context Protocol (MCP) server. These use local inter-process communication (stdio) only; they open no network ports and transmit nothing off your device. If you connect an external agent tool of your choice (for example, Claude Code or Codex) to MacCrown's MCP server or command line, that tool operates under its own privacy policy. MacCrown exposes structured case metadata and workflow actions to it, and does not expose patient identifiers. Do not enter patient-identifying information into third-party agent tools.

5. Opt-in crash capture

On evaluation and beta builds you can turn on crash capture in Settings to help us fix problems. It is off by default on every build and can be turned off at any time. Crash reports are saved only on your Mac and contain no patient data or case content; nothing is uploaded. You decide whether to send them to us, for example by attaching them to an email.

6. Open-source components

MacCrown uses open-source libraries (including Open CASCADE Technology, Manifold, libigl, Eigen, DCMTK, Assimp and oneTBB) for geometry processing. They run entirely on your device and do not transmit any data. See the open-source credits.

7. App Store purchase

Purchases through the Mac App Store are processed by Apple. Apple's purchase and billing policies apply, and MacCrown's developers do not receive your payment information. See Apple's privacy policy for details.

8. This website

maccrown.org sets no cookies and uses no analytics, advertising or third-party scripts or fonts. The site is hosted by Cloudflare, which processes technical request data, such as your IP address, to deliver the pages and protect the site from abuse. If you email us, we use your message and address only to reply and, if you ask for one, to arrange an evaluation invite.

9. Children's privacy

MacCrown is a professional dental CAD tool. It is not designed for or marketed to children. We do not knowingly collect information from children under 13.

10. Data retention

MacCrown retains no user data on external servers. All app data is local to your Mac. When you delete a case file or a patient record, it is permanently removed from your device.

11. Your rights

You have complete control over your data:

• All case files and patient records are on your local file system; delete them at any time.
• No account is required to use the app.
• No app data is stored on external servers, so there is nothing for us to delete.
• To ask us to delete an email conversation, write to [email protected].

12. Changes to this policy

We may update this privacy policy from time to time. The updated policy will be posted at https://maccrown.org/privacy with the revision date.

13. Contact

For privacy questions or concerns:

• Email: [email protected]
• Web: https://maccrown.org/support