Privacy Policy

Twally (两两记) is crafted with privacy as its primary foundation. We believe your finances and personal life should remain strictly yours.

1. Zero Ads, Zero 3rd-Party Tracking

Twally does not include any third-party advertisement SDKs, telemetry beacons, or behavioral tracking SDKs. We do not sell, rent, or analyze your expense records.

2. Native Apple iCloud & End-to-End Security

All financial ledgers, transactions, and wishlists are stored directly on your local device and Apple iCloud private databases, protected by Apple hardware-grade encryption.

3. Secure Couple Sharing Authorization

Ledger sharing is managed solely through Apple's official CKShare mechanism. Only the partner you explicitly invite can access the shared ledger.

4. On-Device Apple Vision OCR

Back Tap screenshot recognition operates 100% on your device using the local Apple Vision machine learning framework. Screenshots are never transmitted to any cloud server.

5. Twally Duo Backend Entitlement Boundary

Our lightweight Worker service only verifies App Store receipt tokens for Twally Duo subscription status. It never receives transaction amounts, notes, merchant names, avatars, or wishlist details.