Privacy Policy

Last updated: 5 July 2026

In short: Struix collects no personal data. It has no accounts, no analytics, no advertising, and no third-party tracking. Every photo is processed on your device, and your images are never sent to us or to anyone else.

This policy explains how the Struix app ("Struix", "we", "us"), an independent app developed by Haoyi Zhu, handles information. It applies to the Struix iOS app.

Information we collect

None. Struix does not collect, store, or transmit personal information. We do not require an account, we do not use analytics or advertising SDKs, and we do not track you across apps or websites. We have no servers that receive your data.

How your photos are handled

Struix works with the RAW and image files you import from a camera, an SD card, or your Photos library. All importing, grouping, merging, and RAW-to-DNG conversion happens entirely on your iPhone. Your photos are never uploaded to us or to any third party. Files you create with Struix are saved back to your own device (for example, to your Photos library) at your request.

Permissions Struix may request

Photos: used only to import the RAW files you select and to save merged or converted results. Struix reads and writes only what you choose; it does not scan or upload your library.
Local Network / Wi-Fi (Hotspot Configuration): used only to connect to your camera's own Wi-Fi network so photos can be imported over that direct connection. It is not used for any other networking, and no data is sent to the internet.
Camera: used only if you scan a pairing QR code shown on your camera's screen.
Bluetooth: used only to wake a compatible camera and turn on its Wi-Fi for importing.

You can review or change these permissions any time in the iOS Settings app.

Purchases

Struix Pro is an optional purchase — either a one-time purchase or an auto-renewable subscription — sold through Apple. Payments are processed by Apple under Apple's Privacy Policy; we never see your payment details. To unlock Pro, the app receives an anonymous entitlement status from Apple that indicates only whether an active purchase exists — it contains no personal information.

Third parties

Struix includes the open-source LibRaw library for decoding RAW files. It runs locally on your device and makes no network connections. Struix integrates no analytics, advertising, or data-broker services.

Children's privacy

Struix collects no personal information from anyone, including children. The app is safe for users of all ages in this respect.

Data retention and deletion

Because Struix stores no personal data on any server, there is nothing for us to retain or delete on your behalf. Any files and settings the app creates live on your device and are removed when you delete those files or uninstall the app.

Changes to this policy

If this policy changes, we will update the date at the top of this page and post the revised policy here. Continued use of the app after an update constitutes acceptance of the revised policy.

Contact

Questions about privacy? Email filaticammae@outlook.com.