Muzhai Privacy Policy

1. Data Collection

By default, Muzhai does not collect, sell, rent, or share your personal data.

Muzhai does not include third-party advertising SDKs, does not track users across apps or websites, and does not require an account.

Muzhai does not automatically send your screenshots, OCR text, translation text, recordings, recent screenshots, or local files to the developer. Copying a diagnostics report writes to the system clipboard; exporting a diagnostics package creates local files. If you separately send material to a support channel, the developer receives the material you send. An App Store purchase does not send this user content to the developer.

When you share content with another app or recipient, the recipient you choose handles that content; sharing does not necessarily send it to the developer.

2. Local Processing

• Screenshot capture, annotation, redaction, export, recent screenshots, and screen recording are processed primarily on your Mac.
• OCR uses Apple Vision locally by default.
• Screenshot translation uses Apple system Translation framework on macOS 15 or later. The current App Store version does not expose external generative-AI providers, external translation services, or third-party provider configuration.
• QR recognition, privacy detection, filename templates, and export rendering are performed locally.
• MP4 / GIF recordings are saved locally. Optional microphone narration is included in MP4 recordings only when you enable it and grant microphone access. The first Mac App Store release does not promote system-audio recording or mouse-click indicators as recording features.
• Copying images, copying files, copying OCR text, or dragging content happens only when you initiate the action.

3. Permissions

• Screen Recording permission: used to read screen, window, or selected region content when you initiate capture or recording.
• Microphone permission: used only for optional narration in MP4 screen recordings.
• File and folder access: used to open local images, save screenshots, export files, save recordings, or read locations you explicitly choose.
• Clipboard: images, text, or file references are written when you copy, use a related shortcut, or initiate a screenshot with a selected or configured copy output. The screenshot completion action may copy automatically without another click on Copy.
• Some copy operations briefly read existing text, URLs, or file references and retain a bounded copy in memory to attempt restoration if the new write fails. Muzhai does not continuously monitor the clipboard or save clipboard history.
• Apple services and network access: Apple StoreKit services provide product information, purchases and restoration, entitlement reconciliation, and transaction updates. The app reads and observes entitlements at launch. Version 1.0.6 also periodically reconciles Apple-verified entitlements while paid access is active. This processing does not send screenshots, OCR text, translation text, or recordings to the developer. Network access may also be used for the support or privacy links you open and macOS management of system translation language resources. Muzhai does not use a developer-operated server to process translation text.
• Accessibility permission: the Mac App Store version does not require Accessibility permission. The current public release does not expose Accessibility-based window-region detection, scrolling capture, or strong automation entry points.

4. Translation Services

Screenshot translation is initiated by you. The current App Store version uses Apple system Translation framework on macOS 15 or later.

Muzhai does not expose external generative-AI providers, external translation services, custom endpoints, or third-party provider configuration, and it does not send translation text to a developer-operated server. Language availability and resource downloads are managed by macOS.

Muzhai does not automatically upload screenshots, OCR text, or translation text as part of translation.

5. Local Storage

• Settings, shortcuts, export preferences, storage location, window state, and feature preferences are stored locally.
• Recent screenshots in the main window are used for quick open, copy, and save actions during the current session. The current release does not include a separate persistent history library, favorites, tags, comparison, or history import/export.
• The current release does not provide iCloud history sync. If you choose an iCloud Drive, cloud-drive, or shared folder as a custom storage location, syncing is handled by the system or third-party service you choose.
• Quick Access, drag-and-drop, and temporary export workflows may write short-lived files to the system temporary directory. You can clear related temporary files in app settings.
• In version 1.0.6, to avoid losing a recording when GIF conversion or saving fails, Muzhai may retain its source MP4 in the local application support directory for recovery. Recovery files have no fixed automatic expiry and may remain across quitting or restarting. Canceling recovery or encountering retryable reading, saving, or permission errors preserves the file. The app attempts cleanup after successful conversion, successful recovery saving, explicit discarding, or confirmation that the media is invalid; cleanup failures may leave the file in place. Ordinary temporary-file cleanup does not include these recovery recordings or already-saved outputs.
• Screen recordings are saved by default in a folder named “幕摘录屏” in the system-provided movies location. The actual path may depend on sandboxing; you can open the location from the app.
• Silent screenshot saves use a folder named “幕摘” in the pictures location unless you choose another destination in Settings. The actual path may depend on sandboxing.
• In version 1.0.6, if you enable Auto Save, the app saves the snapshot available when the screenshot completes. Later edits or redaction do not automatically delete or replace the saved initial file. Save or export the edited result again; quitting the app or clearing Recent Screenshots does not retract these saved files.
• App Store purchase state or local quota records may be stored in Keychain or local preferences.

6. Diagnostics

Muzhai may keep recent errors, permission status, Bundle ID, signing status, shortcut status, and the latest gate summary locally to help troubleshoot issues.

When you choose and confirm Copy Diagnostics, the app writes text to the system clipboard. When you choose and confirm Export Diagnostics, it creates local files at the location you select. Copying or exporting does not automatically send the material. The diagnostics package may include local paths, permission status, redacted preferences, and error logs; review it before separately sharing it.

7. Purchases and Licensing

For the Mac App Store version, purchases and Restore Purchases are handled by Apple App Store / StoreKit. Muzhai does not store bank card data or full payment credentials.

The current App Store version uses StoreKit purchases and Restore Purchases for unlocking. Purchase state or local quota records may be stored locally to determine feature availability.

8. Deletion and Control

• You can quit the app to clear the current session's recent screenshots list.
• You can delete exported screenshots, recordings, diagnostics packages, and temporary sharing files, and you can change or open the custom storage location in Settings.
• You can revoke Screen Recording, Microphone, and file access permissions in macOS System Settings.
• After uninstalling the app, you may manually remove related files from Application Support, Movies, Pictures, or temporary directories.

9. Children's Privacy

Muzhai is not directed to children and does not knowingly collect children's personal information.

10. Changes to This Policy

If app features or data handling practices change materially, this page will be updated.

11. Contact

For privacy or support questions, contact: support@chengjinfang.com