1. How We Collect and Use Your Personal Information
1.1 Providing wallpaper content services
When you browse wallpapers in the App, we collect usage records (page visits, taps, content viewed) to display and recommend wallpaper content. Such information is necessary for providing the core features of the App.
1.2 Wallpaper download and saving
When you use the "Save to Photos" feature, we request the system "Add to Photos" permission (write-only) to save wallpaper images or Live Photos to your photo library. This permission is used only for saving; we do not read the photos already in your library, nor upload them. You may revoke the permission at any time in system settings.
1.3 Account services
When you choose to sign in, the App uses Sign in with Apple for authentication. We collect the unique user identifier returned by Apple (and, if you authorize, the private email relay address provided by Apple) to create and identify your account and to sync your membership status and favorites. We cannot obtain your Apple ID password.
You may also use the basic browsing features as a guest without signing in.
1.4 In-app purchases and membership services
When you purchase a membership, the transaction is processed by Apple through the App Store in-app purchase system. We do not collect your bank card number, payment accounts or other payment information. We receive transaction receipt information returned by Apple (product identifier, transaction status, expiration date, etc.) to activate and maintain your membership benefits, reconcile accounts, and support restoring purchases across devices.
1.5 Push notifications
After you grant the system notification permission, we send you wallpaper updates, content recommendations and other notifications via Apple APNs and the Umeng push service. To deliver pushes, we process the device push token (Device Token) and device identifiers necessary for push delivery. You may turn off notifications at any time in system settings.
1.6 Service security and operational analytics
To keep the service stable, improve the product and prevent malicious attacks, we integrate Umeng analytics after you consent to this Policy, collecting device information (brand, model, OS version, device identifier IDFV), network information (IP address, network type, carrier), and app operation information (launches, crashes, page events). Details are set out in the Third-Party Personal Information Sharing Disclosure.
1.7 Advertising services
To allow non-member users to unlock certain wallpaper downloads by viewing ads, the App integrates the Google AdMob advertising service (provided by Google LLC). To serve ads, control ad frequency and prevent ad fraud, we process device identifiers (the advertising identifier), ad display and interaction data (such as impressions and taps), and coarse geographic location inferred from your IP address (country/region level).
The App does not request tracking permission (no "Allow Tracking" authorization dialog is shown); where tracking is not authorized, the advertising identifier reads as zero and ads are served in non-personalized mode. In regions where consent is required by law (such as the EU), Google will seek your consent via an authorized consent form before serving ads, and you may withdraw it at any time. Details are set out in the Third-Party Personal Information Sharing Disclosure.
1.8 Information you voluntarily provide
When you use the feedback feature, we collect the feedback content and contact information you voluntarily provide, together with image or video attachments you choose to upload (up to 3), solely to receive, analyze and reply to your feedback. Attachments are hand-picked by you through the system photo picker; this process does not require photo library access permission, and we do not read any photos you have not selected. Feedback information is retained only for as long as necessary to handle your feedback.
1.9 AI Generation Service
When you use the "AI Wallpaper" generation feature, we collect the reference image you upload and the prompt text you enter, and generate wallpaper images through the large-model service provided by Volcano Engine (ByteDance). Such information is used solely to generate wallpapers for you and will not be used for purposes such as model training. AI-generated content is a virtual image synthesized by artificial intelligence, and the feature page is clearly labeled "Content is generated by AI".
Generated works are saved under your account and you may delete them at any time in "My AI Works"; you may also stop using the feature after removing your reference image. Do not upload or request content that is unlawful or infringes upon the lawful rights of others (see the User Agreement); we have the right to refuse to generate violating content and handle it under our rules.
1.10 Exceptions to obtaining consent
Under applicable laws and regulations, we may process your personal information without your authorization or consent where: it is necessary for the conclusion or performance of a contract to which you are a party; it is necessary for performing statutory duties or obligations; it is necessary to protect the life, health or property of a natural person in an emergency; or in other circumstances prescribed by laws and regulations.
1.11 Information we do not collect
The App does not collect your precise location, contacts, SMS messages, call records, camera or microphone content, biometric information, or financial account information. It does not request tracking permission (no "Allow Tracking" authorization dialog is shown) and does not track you across apps; ads are served in non-personalized mode, and device identifiers are used solely for ad display and anti-fraud (see 1.7).
2. How We Use Similar Technologies
2.1 To improve loading speed and user experience, the App uses local caching technologies on your device (e.g., image cache, widget data cache) to temporarily store non-sensitive information such as wallpaper thumbnails and configurations.
2.2 You can delete such local cached data by uninstalling the App or clearing system storage.
3. How We Share, Transfer and Publicly Disclose Your Information
3.1 Sharing: We do not share your personal information with third parties unless we obtain your explicit consent or as required by laws and regulations. Third-party services currently integrated in the App and their processing of information are described in the Third-Party Personal Information Sharing Disclosure.
3.2 Transfer: We will not transfer your personal information to any company, organization or individual, except as required by laws and regulations.
3.3 Public disclosure: We will not publicly disclose your personal information, except as required by laws and regulations.
3.4 If personal information needs to be transferred due to merger, division, dissolution or similar reasons, we will inform you as required by law and require the new holder to continue performing this Policy.
4. How We Store and Protect Your Information
4.1 Storage location
4.1.1 Your personal information is stored on servers located in mainland China hosted by Tencent Cloud. We do not transfer your personal information outside mainland China.
4.2 Retention period
4.2.1 We retain your personal information only for as long as necessary to provide services to you. After you delete your account, we will stop providing services and delete or anonymize your personal information within a reasonable period, except as otherwise required by laws and regulations.
4.3 Security measures
4.3.1 We adopt industry-standard security technologies (such as HTTPS encrypted transmission, access control, and the least-privilege principle) to protect your personal information from unauthorized access, tampering, disclosure or damage.
4.4 Incident response
4.4.1 In the unfortunate event of a personal information security incident, we will inform you promptly as required by laws and regulations and report to the competent authorities as required.
Your Rights
In accordance with applicable laws and regulations, you have the following rights regarding your personal information:
| Right | How to exercise |
|---|---|
| Access | View your account, membership status and other information on the Profile page |
| Correction | Modify your nickname and other information on the Profile page or by contacting support |
| Deletion | Delete local favorites and caches; for other cases, contact us |
| Withdrawal of consent | Turn off photo, notification and other permissions in system settings; withdrawal does not affect processing based on consent before withdrawal |
| Account deletion | Submit a deletion request via Profile → Delete Account |
| Copy of personal information | Submit a request by contacting support |
If we are unable to respond to your request, we will explain the reasons in accordance with the law.
Protection of Minors
6.1 Our products and services are primarily intended for adults. We do not knowingly collect personal information from children under 14.
6.2 If you are under 14, please use the App accompanied by and with the consent of your guardian, and have your guardian complete the relevant authorizations. If we discover that we have collected personal information from a minor without prior guardian consent, we will delete it as soon as possible.
Updates to This Policy
7.1 We may revise this Policy from time to time. Without your explicit consent, we will not diminish your rights under this Policy.
7.2 For material changes (such as changes to the purposes of collection and use, or to the recipients of sharing), we will explain them to you via in-app dialogs, announcements or other means and seek your consent again.
7.3 Material changes referred to in this Policy include: changes to the purposes, methods or categories of personal information processed; changes to the recipients or methods of sharing personal information with third parties; and changes to your rights in, and ways of participating in, the processing of personal information.
How to Contact Us
8.1 If you have any questions, comments or suggestions about this Policy, or wish to exercise your rights regarding personal information, please contact us:
- Personal information protection contact: duowallpaper@163.com
- Operator: Xiang Wei (individual developer)
8.2 We will reply within 15 business days after receiving your feedback. If you are not satisfied with the result, you may also file a complaint with the competent authorities such as cyberspace, telecommunications, or market regulation authorities.
Appendix: Permissions
| Permission | Required | Purpose | Effect if disabled |
|---|---|---|---|
| Add to Photos (write-only) | No | Saving wallpapers / Live Photos to the photo library | Cannot save wallpapers |
| Notifications | No | Receiving wallpaper updates and recommendation pushes | Cannot receive pushes |
| Network access | Yes | Loading and downloading wallpaper content | Online services unavailable |