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100% On-Device Apple Neural Engine Privacy

Privacy Policy for iOS

Effective Date: October 2026 • iOS 17.0+ & iPadOS 17.0+ Edition

1. 100% On-Device Machine Learning

DiskWarren for iPhone and iPad is built from the ground up to respect user privacy. All photo indexing, perceptual visual hash generation, duplicate clustering, and 4K ProRes video discovery run entirely on-device using the Apple Silicon Neural Engine (A12 Bionic through M4 chips).

Your photos, videos, album names, facial data, location tags, and iCloud metadata never leave your iPhone. DiskWarren does not maintain remote servers, databases, or cloud sync backends.

2. Apple PhotoKit & Sandboxing

DiskWarren operates within Apple’s strict iOS Application Sandbox. Access to your photo library is granted via Apple's native PhotoKit framework:

  • Limited Photo Library Access: You can grant access to your entire library or select specific albums using iOS 17/18 limited library selection.
  • Local-Only Metadata: DiskWarren reads file sizes, codec formats (HEIC, ProRes, spatial video), and creation timestamps strictly to identify oversized storage consumers.

3. Zero Tracking & No App Tracking Transparency Required

Because DiskWarren does not track users or share data with data brokers, it does not require an App Tracking Transparency (ATT) permission prompt:

  • Zero analytics SDKs (no Firebase, no Mixpanel)
  • Zero IDFA (Identifier for Advertisers) access
  • Zero cross-app tracking
  • Zero remote crash-dump logs containing file paths

4. Apple Photos "Recently Deleted" 30-Day Safety

DiskWarren never permanently deletes photos directly. When you confirm cleanup of duplicate or burst photos, DiskWarren invokes PHPhotoLibrary.shared().performChanges(). The OS displays Apple’s standard confirmation sheet and moves media into your Photos app's **Recently Deleted** album. You retain 30 days to recover any item.

5. StoreKit 2 & Apple Family Sharing Privacy

In-app purchases for DiskWarren Pro Lifetime ($4.99) are handled by Apple StoreKit 2. All payment transactions, receipts, and Family Sharing verifications are handled by Apple. DiskWarren does not collect or process your Apple ID credentials, credit card details, or billing addresses.

6. Contact Us

If you have any questions or feedback regarding privacy in DiskWarren for iOS, contact our privacy officer at support@diskwarren.com.