Effective Date: January 16, 2026
This list details how KATA Trans (developed and operated by Mu Maobing or “The Developer”) collects and uses your personal information, strictly adhering to “Minimum Necessity” principles.
| Type | Purpose | Method | Retention |
|---|---|---|---|
| Apple ID (User ID) | Creating a unique account, identifying membership/credits | Sign in with Apple API | Permanent during account life (Deleted on cancellation) |
| Avatar/Nickname | (Optional) Display in profile | Authorized via Apple Login | Permanent during account life |
| Type | Purpose | Method | Retention |
|---|---|---|---|
| Text Input | AI Translation (Tencent/DeepSeek) & History | User Input | Server: 3 Months (Cache) iCloud: Permanent (Private Asset) |
| Voice Audio | ASR (iFlyTek) & Voiceprint | Microphone | Server: Not Stored (Ephemeral) iCloud: Permanent (Private Asset) |
| Image Files | OCR (iFlyTek) & Image Trans | Camera/Album | Server: Not Stored (OCR Cache < 5m) iCloud: Permanent (Private Asset) |
| Clipboard | “Auto-read Clipboard” feature | Only upon App active (if enabled) | Local processing only, not uploaded |
| Type | Purpose | Method | Retention |
|---|---|---|---|
| Device Identifier | Fraud Prevention & New User Rewards: Prevent abuse, ensure one-time reward | Apple Keychain (Local Read) | Stored ONLY in Device Keychain (Persists after uninstall), Not Uploaded |
| Credit Logs | Billing verification & fraud prevention | System generated | Permanent (Audit) |
| Device Info | UI adaptation & Crash analysis | System API | Permanent (Anonymous stats) |
| CloudKit State | Sync health monitoring | System callback | Local cache only |
| Type | Purpose | Method | Retention |
|---|---|---|---|
| Contact Info (WeChat/Phone/Email) | (Optional) To respond to feedback/suggestions | Voluntarily filled by user (Anonymous allowed) | 6 Months (Deleted after resolution) |