假装钢琴 · Pretend Piano — Privacy Policy
Scope
This policy covers the iPhone and Apple Watch versions of Pretend Piano. Publisher: Pretend Piano (independent developer). Effective date: November 7, 2026. Privacy contact: 13buzzer-cabins@icloud.com.
Local processing
The current release has no accounts, advertisements, third-party analytics or tracking SDKs, and no feature that uploads songs, notation images or raw motion readings to developer servers. The developer does not collect this content through the app.
Songs and settings
Songs, preferences, synchronization receipts and pending operations are stored in app data on your devices. Songs and necessary status are transferred between your paired iPhone and Apple Watch using Apple WatchConnectivity, not sent to developer servers.
Motion, camera and images
Watch motion sensors detect playing gestures. Readings are processed locally and are not persisted as raw motion logs by the app. Images are processed only when you select or capture them; notation recognition runs on iPhone. The app does not intentionally save original images as song attachments or upload them. Recognized notation becomes song data when you use and save it. Originals in your system photo library are not deleted. Humming recording is disabled in this release configuration, which does not request microphone permission.
Retention and deletion
Songs and preferences remain for later use. Delete songs within the app; deletion on a paired device may wait for reconnection. Some upgrades retain a historical song-library backup locally to prevent data loss. Deleting an active song does not necessarily remove these backups, and there is currently no backup-management interface. To clear local app data, save work you need first, then delete the app on each relevant device rather than offloading it while keeping data. System backups may retain data depending on your Apple backup settings; the developer cannot remotely access or erase them.
Support and website visits
If you email support, the developer receives the address, message and attachments you send to respond and keep necessary support records. Do not send unrelated sensitive information. Email and website hosting providers process delivery or access information under their own policies; their analytics are not embedded in the app. Valid requests to delete support correspondence will be handled subject to applicable legal requirements.
Children and changes
The app does not request age or personal profiles or serve targeted advertisements. Parents can manage device permissions and local content. This policy will be updated when relevant features change. Contact the email above for privacy questions.
TestFlight beta testing
When you test through TestFlight, Apple may provide the developer with crash logs, testing usage information and feedback, screenshots, name or email you submit. This information is used to investigate issues and improve the app. Apple processes this information under its TestFlight privacy terms.