Privacy Policy

Last updated: November 4, 2026

Duo Themes (“the app”) is free and supported by advertising. This policy explains what stays on your device, what the app's advertising and analytics partners receive, and the choices you have.

No accounts

The app has no sign-up or login. We do not ask for your name, email address or phone number, and we do not run our own servers that store information about you.

Advertising (Google AdMob)

The app shows ads served by Google AdMob. To show and measure ads, the Google Mobile Ads SDK collects information such as your device's advertising identifier (IDFA, only if you allow tracking), an app-scoped device identifier, approximate location derived from your IP address, device and app information, and how you interact with ads. Google uses this as described in How Google uses information from sites or apps that use its services.

iOS asks whether Duo Themes may track you. If you choose “Ask App Not to Track”, the advertising identifier is not shared and ads are not personalised using it. In the European Economic Area, the UK and Switzerland, a consent form appears first; you can change your choice at any time in the app under More → Privacy & ad choices. You can also change tracking permission in iOS Settings → Privacy & Security → Tracking.

Usage statistics (Google Analytics for Firebase)

The app uses Google Analytics for Firebase to understand how it is used: which screens are opened, when a widget, wallpaper or icon is saved (with its type, style and palette, never the image or any photo), which screen of an iPhone Duo is in use, plus device model, iOS version, app version, country and an app-instance identifier. This data is not linked to your identity. See Privacy and Security in Firebase.

Data stored on your device

Your widget designs, settings and any photo you place in a Photo Frame widget are stored locally on your iPhone, inside the app's private storage and an App Group shared only with the Duo Themes widget. This data is removed when you delete the app.

Photo library

The app asks for permission to add images to your photo library. It uses this only when you tap Save on a wallpaper or icon. When you pick a photo for a widget, iOS's system photo picker gives the app just the photo you choose; the app cannot browse your library.

Children

Duo Themes is not directed at children under 13 and we do not knowingly collect personal information from them.

This website

duothemes.com is a static website with no cookies, analytics or trackers. Our hosting provider may keep standard server logs (such as IP address and browser type) for security and reliability.

Changes

If this policy changes, we'll update this page and the date above.

Contact

Questions? Email [email protected].