倍图精灵 — Privacy Policy

Last updated: October 7, 2026
Effective: October 7, 2026

This policy covers "倍图精灵" (the "App").

In plain words: a purely local asset-scaling tool (@2x / @3x and so on). Scaling happens on
your Mac, and your images never leave it.

1. What we collect

Nothing.

• We do not upload your images, file paths, or file names.
• We do not upload your scaling parameters or settings.
• No analytics, no tracking, no advertising SDK.
• All settings stay on your own Mac, inside the app sandbox:
  ~/Library/Containers/com.mac.gcdev.g21/

2. How the App handles your data

How your images are processed

• Scaling runs entirely on your Mac, using Apple's Core Image interpolation (Lanczos).
  No online service is called and no cloud AI is used.
• Images come from files you explicitly drag into the window; nothing else is scanned.
• Neither the process nor its results are uploaded, and nothing is written to a log.

3. The only things that go online

• App Store in-app purchase (unlocks the full feature set).
  Payment, receipts and refunds are handled by Apple. We never see your payment details and
  never receive your name or account.
• Purchase verification: after a purchase or restore, the App sends Apple's
  transaction identifier and the App's bundle identifier to the developer's server to
  confirm the transaction is valid. No receipt file and no device identifier are sent.
  The App also submits a randomly generated local identifier with the transaction so the
  purchase can be matched up; it contains none of your personal information.
  Beyond this the App makes no network requests.

4. Permissions

• The App does not require Accessibility or Screen Recording permission, and does not use the camera or microphone.
• Images are drag-and-dropped by you; the App does not read any folder on its own.
• Uninstalling the App removes its sandboxed settings.

5. Third parties

The App includes no third-party analytics, advertising, or data-collection SDK. Any network activity involving Apple is itemised under "the only things that go online" above.

6. Your rights

• Delete your settings: just remove ~/Library/Containers/com.mac.gcdev.g21/
• Uninstalling the App also removes its sandboxed data.

7. Contact

Questions? Please write to: gcdev@qq.com