RATTLE DRUM · 拨浪鼓 · TRADITIONAL PLAY
Privacy Policy
Last updated: September 4, 2026
Effective date: September 4, 2026
Rattle Drum (拨浪鼓) is an interactive experience inspired by the traditional Chinese rattle drum. The App does not require an account. Gameplay records and preferences are stored locally on your device, and motion sensor readings are used in real time only to make the drum respond when you shake it.
1. Scope
This Privacy Policy explains how information is handled when you use the Rattle Drum iOS mobile application (the "App"), any official mini-program edition made available by us, and this Policy page. "Rattle Drum," "we," "us," and "our" refer to the developer identified on the applicable App Store or mini-program listing.
Features supplied directly by Apple, WeChat, the operating system, or another third party are governed by that provider's own privacy policy and terms. This Policy does not apply to unrelated websites or services that you may reach through an external link.
2. Information We Process
Local gameplay and settings data. The App stores information such as shake and hit counts, highest combo, achievements, selected and unlocked skins, skins you have tried, and sound, vibration, sensor, and sensitivity settings in local app storage on your device. This data restores your progress and preferences. The App does not provide a cloud account or cross-device synchronization for this data.
Motion sensor data. If shake controls are enabled, the App reads accelerometer measurements while the main play screen is active. The readings are used in real time to estimate shake direction and strength and trigger animation, sound, vibration, and gameplay counts. Raw motion readings are not retained as a history or uploaded by the App.
Audio, vibration, and interaction settings. The App stores your sound, vibration, sensor, and shake-sensitivity choices locally so that it can restore your preferred experience. It does not record microphone audio for the drum experience.
Purchase information. In the iOS edition, some drum skins may be unlocked through consumable in-app purchases in Apple's App Store. Apple processes your payment details. We do not receive or store your full payment card information. The App uses the transaction result only to complete the purchase and unlock the selected skin. Consumable purchases are not restorable after the App is deleted, subject to Apple's rules.
Technical logs for this page. When you visit this Policy page, the hosting service may automatically record standard technical information, including IP address, access time, requested URL, browser or device user agent, and security logs. This information is used to deliver and secure the page and troubleshoot service issues.
3. Permissions and Device Capabilities
| Capability | Purpose | Your choice |
|---|---|---|
| Accelerometer | Detects shake direction and strength while the play screen is active. | You can turn off Sensor in Settings and continue using tap and swipe controls. |
| Vibration | Provides brief tactile feedback after a valid drum hit. | You can turn off Vibration in Settings. |
| Network access | Loads this Policy page and, in the iOS edition, communicates with Apple's App Store for purchases. | Core local gameplay remains available when network access is unavailable, but policy or purchase pages may not load. |
| Local storage | Saves gameplay progress, settings, achievements, and skin status on the device. | You can clear the App's data or uninstall the App to remove local records. |
The App does not require you to provide a name, phone number, contact list, precise location, camera recording, microphone recording, or photo library content for its core drum gameplay. If a platform requests a permission for a separate feature, the platform will display its own permission prompt before that feature is used.
4. How We Use Information
- Provide drum interaction, animation, sound, vibration, skins, achievements, and local statistics;
- Save and restore your local progress and preferences;
- Complete App Store purchases and grant the selected drum skin;
- Maintain security, prevent abuse, troubleshoot errors, and support reliable operation; and
- Comply with applicable law and protect legal rights and safety where necessary.
5. Third-Party Services and Sharing
We do not sell your personal information. The App or mini-program may interact with Apple's App Store, WeChat services, the DCloud uni-app runtime, and infrastructure providers that host this Policy. These providers may process necessary technical or transaction information under their own terms and privacy policies. Their practices are governed by their policies, not this Policy.
We may also disclose information if required by applicable law, a court, or a competent authority, or when reasonably necessary to protect users, legal rights, property, or service security.
6. Storage, Retention, and Deletion
Gameplay records, settings, achievements, and skin status remain in local app or mini-program storage until you clear the data, uninstall the App, or the platform removes the mini-program's local storage. Purchase records may remain with Apple according to Apple's retention requirements and your Apple Account settings. Hosting logs for this page are retained only as reasonably necessary for security, operations, and legal obligations.
7. Security
We use reasonable administrative and technical safeguards appropriate to the information handled, including serving this Policy over HTTPS and limiting the collection and transfer of gameplay data. No transmission or storage method is completely secure, so absolute security cannot be guaranteed.
8. Your Choices and Rights
You can disable motion sensing, sound, or vibration in the App's Settings. You can remove local records by clearing the App's data, clearing the mini-program's storage, or uninstalling the App. Apple and WeChat provide their own controls for account, purchase, and platform data.
Depending on where you live, you may have rights to request access, correction, deletion, restriction, objection, withdrawal of consent, or portability of personal information, and to lodge a complaint with a data protection authority. To submit a request or ask a privacy question, use the developer contact details displayed on Rattle Drum's applicable distribution page. We may need to verify your request before responding.
9. Children's Privacy
Rattle Drum may appeal to users of different ages, including families. The App does not require a child to create an account or directly submit a name, phone number, email address, contacts, precise location, photo, or voice recording for core gameplay. Children should use the App or mini-program with the involvement of a parent or legal guardian. If you believe a child has provided personal information through a third-party platform feature, contact us through the developer details on the applicable distribution page and contact that platform where appropriate.
10. International Processing
Local gameplay and settings data are not uploaded by the App or mini-program as part of ordinary play. Information processed by Apple, WeChat, DCloud components, or hosting providers may be handled in countries or regions where those providers operate. Privacy laws in those locations may differ from those in your place of residence.
11. Changes to This Policy
We may update this Policy when features, service providers, technology, or legal requirements change. We will publish the revised Policy at this address and update the date above. We will provide additional notice or obtain consent where applicable law requires it.
12. Contact Us
For questions, comments, or requests about this Policy or our handling of information, contact the developer using the contact details shown on Rattle Drum's App Store listing. We will respond within the period required by applicable law after verifying the request where necessary.