Lumenfoil

Your patterns stay yours.

Privacy policy updated October 1, 2026

This policy covers the Lumenfoil iPhone and iPad app and lumenfoil.com. The app update 2.0.1 adds optional Meta ad measurement. Earlier versions do not include this measurement SDK.

Your designs

Patterns, colors, project settings and material estimates are stored in the app on your device. We do not send your designs to Meta or upload them to a Lumenfoil server. When you share an export, you choose the destination. Copies and device backups are subject to the services you choose.

Optional ad measurement

In app versions that include it, you can choose whether to allow measurement in Settings, then Ad measurement. The app asks for Apple's App Tracking Transparency permission. You can decline and keep using the same features. We do not initialize the Meta SDK when that permission is not granted.

If you grant permission, Meta's iOS SDK receives app-opening and installation information, device identifiers and technical information such as the app version, operating system, device model and network information. This helps measure whether our ads lead to app use. Meta may link these signals to information it holds to attribute ads. Its SDK can also process technical diagnostics. The SDK's event-data-use setting is limited to analytics and conversions.

We disable automatic app-event logging, automatic purchase-event logging and automatic inclusion of additional event metadata. We do not supply your name, email, pattern contents or purchase details to the SDK. There are no third-party ads inside the app.

You can change or withdraw permission in iOS Settings, Privacy & Security, Tracking. Our app stops recording and explicitly sending new measurement events when permission is withdrawn. Withdrawal does not erase information already received by Meta. See Meta's Privacy Policy for its processing, retention and your choices.

Purchases

Apple handles payments and subscriptions. We do not receive your card details. The app reads StoreKit entitlement information to unlock and restore Pro access. This update does not change your subscription products or entitlement checks.

Our website and support

Cloudflare hosts our website and processes technical request information needed to deliver and secure it. Website traffic statistics are separate from app-install measurement and do not by themselves prove a download. If you contact support or submit a website form, we receive the details you provide so we can respond or provide the updates you requested. We do not send that correspondence to the Meta app SDK.

Your choices

Contact

For privacy questions or requests, email support@lumenfoil.com.