Privacy Policy

This Privacy Policy explains how the developer of Wall4U (package name com.wall4u.parallax.wallpapers) collects, uses, stores, and shares information when you use the Android application. In this policy, “Wall4U,” “we,” “us,” and “our” refer to the application and its developer.

1. Information we collect

The information collected depends on the features you use.

• Account information: if you sign in with Google, Wall4U may receive your Google/Firebase user identifier, display name, email address, profile image URL, sign-in provider, and email-verification status. This information is sent to the Wall4U service to create or retrieve your account.
• Content and social activity: favorites, follows, views, downloads, notification activity, and similar interactions may be associated with your account. If contribution or upload features are available and you use them, we process the image or other media, title, description, and related account information you submit. Content intended for publication may be visible to other users with your profile name or image.
• Device and technical information: IP address, device model and manufacturer, operating-system and app version, language, network state, app instance or installation identifiers, diagnostic information, and dates and times of access may be collected by Wall4U or its service providers.
• Advertising and analytics information: advertising identifiers, app-set or similar identifiers, ad impressions and interactions, session and feature usage, attribution data, and fraud-prevention signals may be processed. Personalized advertising is subject to applicable consent requirements and your device or provider settings.
• Notification information: push subscription identifiers, notification permission and delivery status, topic preferences, notification interactions, and, for signed-in users, an email address or account identifier may be processed by OneSignal and the Wall4U service.
• Purchase information: product identifiers, subscription or purchase status, transaction and entitlement information, and purchase history required to provide or restore Pro access. Payments are processed by Google Play; Wall4U does not receive your full payment-card details.
• Support communications: if you contact us, we receive your email address and the information you include in your message.

2. Device access and local processing

Wall4U may request or use Android capabilities to:

• access the internet and network state to load content, ads, purchases, and account data;
• send notifications if you grant notification permission;
• set, download, or automatically change static, video, or live wallpapers;
• save downloaded media to device storage where supported by Android; and
• use motion sensors for parallax and visual effects.

Motion-sensor readings used for parallax rendering are processed on the device; Wall4U does not intentionally transmit those sensor samples to its backend. Selecting media for an available upload feature gives Wall4U access only to the item you choose through the Android picker.

3. How we use information

We use information to:

• provide, maintain, personalize, and improve Wall4U;
• authenticate users and synchronize accounts, favorites, and notifications;
• deliver, download, preview, and apply wallpaper content;
• process, verify, and restore purchases and Pro entitlements;
• deliver and measure ads, provide rewarded-ad access, and prevent advertising fraud;
• measure app performance and understand feature usage;
• moderate content, protect users, secure the service, and prevent abuse; and
• respond to support requests and comply with legal obligations.

4. When information is shared

Information may be shared in the following circumstances:

• Service providers: with companies that provide authentication, hosting, analytics, notifications, advertising, payment and entitlement management, content delivery, or other functions for Wall4U.
• Public features: content and profile attribution that you choose to publish may be visible to other users.
• Legal and safety reasons: where reasonably necessary to comply with law or valid legal process, enforce terms, investigate fraud or abuse, or protect the rights, property, and safety of users, the public, or Wall4U.
• Business transfers: in connection with a merger, financing, acquisition, reorganization, or sale of assets, subject to applicable law.

We do not directly sell your personal information for money. Advertising-related disclosure of identifiers or activity may, however, be treated as “sharing,” “sale,” or targeted advertising under some privacy laws.

5. Third-party services

The providers below may collect or process information under their own policies. Advertising mediation partners can change over time based on region, availability, and ad configuration.

• Google Play Services, Google Sign-In, Firebase Authentication, Firebase Analytics, Google Mobile Ads, and Google Play Billing — Google Privacy Policy and Firebase Privacy and Security
• CAS.AI / Clever Ads Solutions and its advertising mediation partners — CAS.AI Privacy Policy
• OneSignal — OneSignal Privacy Policy
• RevenueCat — RevenueCat Privacy Policy
• Meta technologies, including the Facebook SDK or mediated advertising where enabled — Meta Privacy Policy

6. Local storage, backups, and retention

Wall4U stores preferences, account/session information, cached catalog content, favorites, images, and prepared wallpaper assets on your device. Some eligible app data may be included in Android backup or device-transfer services. Downloaded wallpapers may remain in public media storage after the app is removed.

We retain server-side account information, user content, and activity for as long as reasonably needed to provide the service, maintain security, resolve disputes, and meet legal obligations. Retention periods may differ by data type. Third-party providers retain information according to their own policies. Signing out or uninstalling Wall4U stops future app use but does not automatically delete data already held by Wall4U, Google, OneSignal, RevenueCat, advertising providers, or other service providers.

7. Your choices and privacy rights

• You may use guest features without signing in where the app permits.
• You can disable notifications in Android settings.
• You can reset or limit advertising identifiers and ad personalization through Android or Google settings.
• You can clear app data or uninstall Wall4U to remove most locally stored app data.
• You can manage subscriptions and purchase history through Google Play.

Depending on where you live, you may have rights to request access, correction, deletion, restriction, portability, or an objection to certain processing. To make a privacy or account-deletion request, email bitbyteapps51@gmail.com. We may need to verify your identity before completing a request, and lawful exceptions may apply.

8. Children’s privacy

Wall4U is not directed to children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has provided personal information, contact us so we can take appropriate action. Users must also meet any higher minimum age required in their country or obtain consent from a parent or legal guardian where applicable.

9. Security and international processing

We use reasonable administrative, technical, and organizational safeguards designed to protect information. No method of electronic storage or transmission is completely secure, so absolute security cannot be guaranteed. Wall4U and its providers may process information in countries other than your own, where data-protection laws may differ, subject to applicable safeguards.

10. Changes to this policy

We may update this Privacy Policy to reflect changes to Wall4U, its providers, or applicable law. The effective date above will be revised when the policy changes. Please review this page periodically.

11. Contact us

For privacy questions, account/data requests, or concerns about this policy, contact us at bitbyteapps51@gmail.com.