The ultimate offline translation terminal for lawyers and business professionals. Powered by local LLMs & Whisper. No data leaks, ever.
We recommend HY-MT 1.8B (~1.2GB) as the primary model and provide a built-in download link. You can also import any GGUF model of your choice via the Model Manager.
Designed by a lawyer for professionals who handle sensitive information every day.
Zero data upload. All translations happen locally on your device. Perfect for NDAs and confidential contracts.
Import .docx files directly. Translate legal documents while preserving formatting and context.
Snap a photo of physical documents. Our offline OCR engine extracts text instantly without cloud processing.
Real-time speech-to-text powered by OpenAI's Whisper model running locally on your phone.
Refine your drafts into professional Legal, Business, or Academic styles with one tap.
Define your own terminology sets to ensure consistency across specific domains (e.g. Construction).
Developed by Li Boyang, a PRC Licensed Lawyer at Beijing Longan (Guangzhou) Law Firm.
"I built PrivaTrans because I needed a tool that I could trust with my own clients' confidential data. If it goes to the cloud, it's out of your control. PrivaTrans keeps it in your hand."
PrivaTrans is free forever, please feel free to use it. If you have any suggestions, or need professional legal consultation regarding Chinese law, feel free to contact me.
liboyang@lslby.comLast Updated: 2026-01-18
PrivaTrans ("we," "our," or "us") respects your privacy. This Privacy Policy explains how our application handles your data. By using PrivaTrans, you agree to the collection and use of information in accordance with this policy.
We do not collect, store, or transmit any personal data, text inputs, voice recordings, document contents, or translation results to our servers or any third-party servers. All processing is performed locally on your device.
The application requires internet access ONLY for: (1) Downloading AI models from public repositories; (2) Checking for application updates; (3) Downloading OCR language resources via Google Play Services (Android only).
Last Updated: 2026-01-18
Please read these Terms of Service ("Terms") carefully before using the PrivaTrans mobile application.
By accessing or using PrivaTrans, you agree to be bound by these Terms. If you disagree with any part of the terms, you may not use the application.
The Application is provided to you "AS IS" and "AS AVAILABLE" and with all faults and defects without warranty of any kind. To the maximum extent permitted under applicable law, we expressly disclaim all warranties, whether express, implied, statutory or otherwise, including implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. Specifically, we do not warrant that the AI-generated translations, OCR results, or speech transcriptions will be accurate, reliable, or error-free.
PrivaTrans is a tool designed to assist professionals. However, AI translation should not replace professional human translation, especially for critical legal, medical, or financial documents. You acknowledge that you should verify any critical outputs manually. We shall not be liable for any direct, indirect, incidental, or consequential damages arising from errors in translation or the use or inability to use this application.
You retain all rights to the content you input into the Application. Since the Application operates offline, we do not access, claim ownership of, or have any liability for your content.