Privacy Policy

This Privacy Policy explains how Walzi ("the App", "we", "us", or "our") collects, uses, and discloses information when you use our mobile application. By downloading, installing, or using Walzi, you agree to the practices described in this policy.

In short: Walzi does not require you to create an account. Your favorites and custom wallpaper lists are stored only on your device. We use Google Firebase for basic analytics and notifications, and Google AdMob to show ads that support free access to the App.

1. Information We Collect

1.1 Information You Provide

Walzi does not require registration, sign-in, or any personal account information to browse, download, or set wallpapers. We do not collect your name, email address, or phone number through the App itself.

1.2 Information Collected Automatically

Like most apps, Walzi and its third-party service providers automatically collect certain technical information when you use the App, including:

Device information (device model, operating system version, language, screen resolution)
App usage data (screens viewed, features used, session length) via Firebase Analytics
Crash and performance diagnostics
A Firebase Cloud Messaging (FCM) device token, used solely to deliver push notifications about new wallpapers — this token is not linked to any personal identity
General, non-precise location inferred from IP address (for regional content/ad relevance), where applicable

1.3 Information Stored Locally On Your Device

Your favorited wallpapers and any custom wallpaper lists you create are stored only locally on your device using Android's local storage. We do not upload, sync, or have access to this data on our servers.

2. Google AdMob and Advertising

Walzi is a free app supported by advertising. We use Google AdMob, an advertising service provided by Google LLC, to display ads within the App.

To serve ads (including personalized ads, where permitted), Google AdMob and its partners may collect and process:

Your device's advertising identifier (e.g., Android Advertising ID)
IP address and general location
Device and app information
Ad interaction data (impressions, clicks, viewability)

Google's use of this information is governed by Google's own privacy policies. You can learn more about how Google uses data from apps that use its services here: policies.google.com/technologies/partner-sites.

2.1 Your Ad Choices

You can opt out of personalized advertising or reset your advertising identifier at any time:

On Android: go to Settings → Google → Ads, then select "Opt out of Ads Personalization" or "Reset advertising ID".

Opting out does not stop ads from appearing, but it limits the use of your data to personalize them.

3. Other Third-Party Services

Walzi relies on the following third-party infrastructure providers to operate:

Google Firebase (Firestore, Cloud Messaging, Analytics) — for storing wallpaper/category content and delivering notifications. See Firebase's privacy documentation.
Cloudflare R2 — for hosting wallpaper image files. No personal data is stored here; it only serves static image content.

4. How We Use Information

To operate, maintain, and improve the App
To understand aggregate usage patterns and fix bugs
To deliver relevant push notifications about new content
To display and measure the performance of advertisements

5. Data Sharing

We do not sell your personal information. Technical and usage data described above is shared only with the service providers named in this policy (Google Firebase, Google AdMob, Cloudflare) strictly to operate the App's core functionality and advertising.

6. Data Security

We take reasonable technical and organizational measures to protect information processed by the App. However, no method of electronic transmission or storage is 100% secure, and we cannot guarantee absolute security.

7. Children's Privacy

Walzi is not directed at children under the age of 13 (or the equivalent minimum age in your jurisdiction), and we do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us using the details below so we can take appropriate action.

8. Your Rights and Choices

You may uninstall the App at any time, which stops all further data collection by Walzi.
You may opt out of personalized ads as described in Section 2.1.
Depending on your jurisdiction (e.g., under GDPR or CCPA), you may have additional rights to access, correct, or delete personal data. Contact us to make such a request.

9. Changes to This Policy

We may update this Privacy Policy from time to time. Material changes will be reflected by updating the "Last updated" date at the top of this page. Continued use of the App after changes take effect constitutes acceptance of the revised policy.

10. Contact Us

If you have questions about this Privacy Policy or our data practices, contact us at:

yunoktech@gmail.com