Privacy Policy

Last updated: April 13, 2025

Wallpapers by KTK ("we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application, Wallpapers by KTK (the "App"). Please read this policy carefully. If you do not agree with the terms of this Privacy Policy, please do not use the App.

1. Information We Collect

We collect the following types of information:

a. Personal Information

• Authentication Data: When you sign in with Google, we collect your Google account information, such奶奶 as your user ID, email address, and profile information, to authenticate your identity and provide personalized services.
• ID Token: We generate and store an ID token via Firebase Authentication to securely manage your session.

b. Non-Personal Information

• Usage Data: We collect anonymized data about how you interact with the App, such as pages visited, searches performed, wallpapers viewed, and ad interactions, using Firebase Analytics.
• Device Information: We collect details like device type, operating system, and OS version to optimize the App’s performance.
• Ad Data: We use Google Mobile Ads to display ads. This may involve collecting anonymized identifiers (e.g., advertising ID) to serve personalized or non-personalized ads based on your preferences.

c. Cached Data

The App caches images (wallpapers and thumbnails) on your device to improve performance, stored in the App’s local storage.

2. How We Use Your Information

We use the collected information to:

• Authenticate users and provide a personalized experience (e.g., saving preferences).
• Deliver and optimize wallpapers based on your searches and category selections.
• Display ads to support free access to the App, including rewarded, interstitial, and native ads.
• Analyze usage patterns to improve the App’s functionality and content via Firebase Analytics.
• Ensure security and prevent unauthorized access through session management.

3. How We Share Your Information

We do not sell your personal information. We may share information as follows:

• Service Providers: With third-party services like Google (Firebase and Google Mobile Ads) to facilitate authentication, analytics, and ad delivery. These providers have their own privacy policies:
  • Google Privacy Policy
  • Firebase Privacy
• Legal Compliance: If required by law or to protect our rights, we may disclose information to authorities or in response to legal processes.
• Aggregated Data: We may share anonymized, aggregated data for analytics or marketing purposes, which cannot identify you.

4. Cookies and Tracking Technologies

The App does not use cookies but employs Firebase Analytics and Google Mobile Ads, which may use device identifiers or similar technologies to track usage and serve ads. You can opt out of personalized ads via your device settings (e.g., reset advertising ID or enable "Opt out of Ads Personalization").

5. Data Security

We use industry-standard measures, such as Firebase Authentication and secure API calls, to protect your information. However, no method of transmission over the internet is 100% secure, and we cannot guarantee absolute security.

6. Data Retention

• Personal Information: We retain authentication data as long as your account is active or as needed to comply with legal obligations.
• Cached Data: Wallpapers and thumbnails are stored locally and cleared after 7 days or when you uninstall the App.
• Analytics Data: Anonymized usage data may be retained indefinitely for analysis.

7. Your Choices

• Account Deletion: You can sign out or delete your Google account, which will remove associated personal data from the App.
• Ad Personalization: Adjust your device’s ad settings to limit personalized ads.
• Analytics: Disable Firebase Analytics via your device settings, though this may limit some features.

8. Children’s Privacy

The App is not intended for children under 13. We do not knowingly collect personal information from children under 13. If we learn such data has been collected, we will delete it promptly.

9. International Users

The App is hosted in the United States. By using the App, you consent to the transfer of your information to the U.S., where data protection laws may differ from your jurisdiction.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. The updated policy will be posted in the App with a revised "Last Updated" date. Continued use of the App after changes constitutes acceptance of the new terms.

11. Contact Us

For questions or concerns about this Privacy Policy, contact us at:

Email: [email protected]