Leather Yield Calc Privacy Policy
Data collection
Leather Yield Calc does not collect personal data, calculation inputs, result sheets, or local history on developer-operated servers.
Local processing and storage
The app processes entered hide, yield, pattern, piece-count, waste, and price values on the device. It does not create an account, send calculation data to a server, or provide cloud storage.
Accounts
Leather Yield Calc does not require account creation, sign-in, or an online profile.
Analytics and tracking
The app does not use third-party analytics, advertising, tracking SDKs, or cross-app tracking.
Sharing
If you choose a result-sharing action, the app uses Apple's standard system share sheet. The text goes only to the destination you select; the app does not automatically send it to the developer.
Network access and third parties
The core workflow is offline and uses no backend, cloud sync, remote data provider, authentication service, or third-party API.
Data deletion
Delete the app from your device to discard its local app state. There is no online account or server-side calculation history to delete.
Support email
If you email support, the email thread may be retained as needed to respond to your request. For privacy questions, email yangguangwin@icloud.com.