Privacy Policy

Effective date: October 9, 2026

Stained Glass Calculator runs its project calculations locally and does not require an account.

Information We Collect

The app does not ask for your name, email address, location, contacts, photos, or login credentials. Project inputs and material presets are stored on your device.

Purchases

In-app purchases are handled by Apple. RevenueCat may process purchase identifiers, entitlement status, app identifiers, platform metadata, and an anonymous customer identifier needed to unlock Pro and restore purchases.

Android Purchases

Android Pro is purchased on a Stripe-hosted checkout. Stripe processes the information you submit, such as your email and payment details, under its own privacy policy. Mindsle does not receive your card number. The license service stores checkout identifiers, hashed license and claim identifiers, purchase state and timestamps to verify, restore or revoke Pro. Cloudflare processes ordinary request information, including IP addresses, for hosting and security. Project inputs and CSV files are not sent to this service. The app stores its license securely on the device and uses a verified entitlement cache for up to seven days offline.

Exports

When you export a CSV estimate, the file is created on device and passed to the system share sheet. You choose the destination. We do not upload the file to a Mindsle server.

Remote Configuration

The app may request non-personal configuration such as legal links, feature availability, or warning text. Core calculations continue to work from bundled defaults if that request is unavailable.

Contact

For privacy questions, contact Stained Glass Calculator support.