Privacy Policy

VietPhrase (vietphrase.pages.dev) is a free, open-source Chinese-Vietnamese translation tool that runs entirely in your browser.

Data We Collect

We do not collect, store, or transmit any personal data to our servers. All translation, dictionary data, books, and reading progress are stored locally on your device using IndexedDB and localStorage.

Google Drive Integration

If you choose to enable Cloud Sync, the app requests access to Google Drive's app-specific folder (drive.appdata scope). This allows the app to:

• Store and retrieve your sync data (books, reading progress, settings, custom phrases) in a hidden app folder on your Google Drive
• This folder is only accessible by VietPhrase and is not visible in your Drive

We do not access, read, or modify any other files in your Google Drive. The access token is stored locally on your device and is never sent to any third-party server.

Third-Party Services

• Google Identity Services — used solely for OAuth authentication when you enable Cloud Sync
• Google Fonts — font files are loaded from Google's CDN

Data Storage

All app data is stored locally in your browser:

• Dictionaries and custom phrases — IndexedDB
• Books and reading progress — IndexedDB
• Settings and preferences — localStorage

You can delete all data at any time by clearing your browser's site data for this domain.

Contact

If you have questions about this privacy policy, please open an issue on our GitHub repository.