Last updated 27 October 2026

Privacy policy

GridMarten doesn't collect any data. It has no account, advertising, analytics or server.

Your files

GridMarten reads the photos you choose on your Mac and saves new files where you choose. It doesn't upload or send your files anywhere. Layout templates are stored in the app's sandbox on your Mac.

Purchases and diagnostics

Apple processes your purchase; the developer never sees your payment details. If you have chosen to share analytics with app developers in macOS settings, Apple may provide anonymous crash reports and usage statistics.

This website and support

This website is hosted by Vercel and has no analytics or tracking scripts. Support emails are only used to answer you. Vercel processes connection details under its own privacy policy.

Questions and changes

Privacy questions: support@lewcart.com. If this policy changes, the date at the top will change too.