Turnstone

Last updated 13 November 2026.

The short version

Turnstone collects no personal data and works without internet connectivity. There are no user accounts, no advertisements, no third-party tracking frameworks, and no analytics.

Everything stays on your device

Your designs, pictures and names, and the files you save, remain on your Mac. Turnstone has no server and never transmits your work anywhere.

Purchases

Turnstone Unlock is purchased directly through the Apple App Store (and through Google Play on Android, once available). The transaction is handled by Apple or Google; Turnstone receives only the confirmation that your unlock is active and never sees your billing details or payment methods.

Sharing and printing

Images, the time-lapse video and the PDF pattern sheets are made entirely on your Mac and saved or shared where you choose. Turnstone has no Print button and never looks for printers on your network: you print the saved PDF from Preview.

Feedback email

The Email the developer button opens a message in your own mail app. It includes the app and macOS versions, your design’s technique, number of cards and picks, the screen and the guide pick you are on, how many designs you have saved and whether the unlock is active, so we can help you, and never the design itself. You can read and edit it before you send it; nothing is sent unless you press send.

Contact

Questions regarding this policy: support@khangazun.com.