Margin Walls for Android and Windows

Privacy policy

Effective November 13, 2026. Android package app.lumen.livewallpaper. Margin Walls was previously called Lumen.

This policy describes the Margin Walls live wallpaper apps for Android and Windows and this website. Margin Walls is published by RVN Apps. You don't need an account to use the apps. Signing in is optional and is only used to sync between your devices.

Photos and videos stay on your device unless you sign in to sync

Photos, GIFs and videos you choose as wallpapers, and clips you record in the app, stay on your device. Nothing is uploaded unless you sign in to sync and leave “Sync my media” on. Margin Walls doesn't send your media to an ad network or anyone else, doesn't use it for ads, and doesn't sell it.

Signing in and syncing

Sync is optional. If you sign in with Google (in Settings), your Google account ID and email address go to Google Firebase, which we use for sign-in. The wallpaper you have on and its look settings (dim, blur, filter, vignette) are stored with your account in Google Firebase Realtime Database so your other signed-in devices can follow along. On Windows, Fit and the text overlay stay on that PC.

If you also leave “Sync my media” on, the photos and videos you add are uploaded to private, per-account storage on our own server (hosted on Hostinger) so your other signed-in devices can show them. Only your signed-in account can access these files: every request is checked with a Firebase ID token for that account. The files are not public, not used for ads, and not shared with anyone. A small index of your media (file name, type, size, a content fingerprint, dimensions, and which device added it) is kept with your sync data in Firebase Realtime Database.

You can choose to sync media only on Wi-Fi (Android, on by default) or only on unmetered connections (Windows). Uploads are capped per file (100 MB per video, 20 MB per photo), and each account has a storage quota. “Delete my sync data” in Settings removes your uploaded files and the index. Turning off “Sync my media” keeps new media on the device.

Wallpaper downloads and the catalog

The apps download the wallpaper catalog, and the wallpapers you pick, from our server. That server sees an ordinary web request, including your IP address. Wallpapers download only when you choose one.

Update checks

Unless you turn it off in Settings, the Windows app checks our server for a newer version at startup and about every 6 hours, and installs a newer version when one is published. Android copies installed from a download rather than Google Play check our update server about once a day. These checks are ordinary web requests and don't include your media or account.

Camera and microphone

On Android, the camera is used only for the in-app record button and only while you're recording; the microphone is used only if you turn sound on for that recording. On Windows, the webcam is used only while you record a clip in the app, video only, and clips are saved to your Videos folder. Recordings aren't used for advertising, aren't captured in the background, and aren't uploaded unless you sign in and sync your own media.

Advertising and analytics

The current Margin Walls releases show no ads, and no ad network receives information from the apps. On Android, ads are switched off in the current release and the advertising-ID permission is removed. The Windows app sends no telemetry or analytics.

If ads are added in a future version, this policy will be updated first to cover them, including which ad provider is used, what it collects, and how you can give or withhold consent, before that version is released.

Storage on your device

The apps read the media you pick so they can show it as the wallpaper, and can save a recording or a downloaded wallpaper on the device. On Windows, settings and a small diagnostic log stay in your user profile. Uninstalling removes the app's settings; your recordings stay where they were saved.

This website

The gallery on this website shows previews of wallpapers in the app; loading it is an ordinary website request. Writing to support opens an email to support@rvnapps.com. The site doesn't use its own analytics cookies.

Children

Margin Walls is a general-audience app and is not directed at children under 13. We do not knowingly collect personal information from children.

Changes

If this policy changes, the effective date at the top will change and the new text will be published at this URL. Continued use of the apps after the new date means the updated policy applies.

Contact

Questions about this policy: support@rvnapps.com. If the question is about the Android app, please include the package name app.lumen.livewallpaper and your Android version.