Privacy policy

Caliper3D collects nothing about you and sends nothing to us. Here's that in full, and what this website keeps when you send feedback.

Last updated: 25 October 2026. Write to support@caliper3d.com about anything here.

The app

This covers Caliper3D for Mac and Caliper3D for Windows alike.

  • It collects nothing and sends nothing to us. There's no account, no analytics and no tracking.
  • Your designs stay wherever you save them: on your Mac or in your iCloud Drive, or on your PC or in your OneDrive. The app never sends them to us.
  • Buying: you buy Caliper3D for Mac from the Mac App Store, under Apple's privacy policy, and Caliper3D for Windows from the Microsoft Store, under Microsoft's privacy statement. We never see your payment details.
  • Crash reports: if you've chosen to share analytics with app developers in your Mac's settings, Apple may pass us reports of crashes; on Windows, if your diagnostic data settings allow it, Microsoft may. Each does so under its own privacy policy, and the reports don't say who you are.
  • Claude: Claude's access is off until you turn it on in Settings. Then the app listens only on your own computer (127.0.0.1), for programs that hold your token, which is kept in your Mac's Keychain or in Windows Credential Manager. Nothing comes to us. What Claude reads through it is sent to Anthropic by Claude Code or Claude Desktop, under Anthropic's privacy policy, as with anything else you share with Claude.
  • Send Feedback… in the Help menu opens this website in your browser. Nothing is sent until you press Send.

This website

This site uses no analytics, no tracking and no cookies.

Feedback

When you send feedback, we keep:

  • what you write;
  • your email address, if you give it, only to reply to you;
  • the details the app adds when you choose Send Feedback: which app, its version and build, your system's version, and your computer's kind of chip.

We use them to find and fix problems. To stop floods of messages, we count reports from each IP address over an hour, keeping a one-way hash of the address rather than the address itself.

Who else handles it

  • Netlify hosts this site, and keeps short-lived logs, such as IP addresses, for security.
  • Turso hosts the database of feedback.
  • Resend emails each report to us.
  • GitHub hosts the test builds offered for download, and keeps logs of downloads under its privacy statement.

Some of them work in the United States. Our agreements with them protect your data as UK and EU law requires.

How long we keep it

We keep feedback until you ask us to delete yours, or we no longer need it to fix problems. The count against each hashed address keeps only the latest hour's number, and isn't linked to any report.

Your rights

You can ask for a copy of what we hold about you, ask us to correct it, or ask us to delete it. Write to support@caliper3d.com. If you're unhappy with our answer, you can complain to the Information Commissioner's Office (ico.org.uk).