BitSphere Private Document Chat is an intelligent desktop application that enables you to securely and privately chat with your own documents. You drag your Word files, PDFs, or text files, and pose questions in a natural language, i.e., plain English. The app reads and comprehends your files on your computer and provides you with the answers explicitly without sending anything to a server.
Since all things are offline in your device, all your documents will remain absolutely private. No accounts, subscriptions, usage limits, or hidden data collection. You have all the control and the freedom of mind, knowing that nothing comes out of your computer and nothing is followed.
The BitSphere Private Document Chat is best suited to professionals, as well as students, who handle sensitive or confidential files. Long documents can be summarised very fast, the most important information can be gained, and it is much easier to comprehend the complicated parts and stay completely safe and offline. It is performance, and it is based on your hardware, but the advantage is complete privacy.

Key Features of BitSphere Private Document Chat:
- Fully offline AI processing – All document analysis happens locally on your computer with no cloud connection.
- Supports Word, PDF, and text files – Works with the most common document formats used daily.
- Ask questions in plain English – Type natural questions and get clear, simple answers.
- Answers only use your documents – The app never pulls information from the internet or external sources.
- Source highlighting for verification – See the exact passages used to generate each answer.
- Complete data privacy and security – Nothing is uploaded, tracked, stored externally, or shared.
- Designed for sensitive and professional use – Ideal for HR, legal, consultants, researchers, and confidential work.
- No accounts or subscriptions required – Use the app freely without recurring fees or sign-ups.
- Zero usage limits – Ask unlimited questions and process unlimited documents.
- Works fully offline on Windows – Runs on Windows desktops using local AI models.
- Hardware-based performance – Speed depends on your computer, trading cloud speed for total privacy.
- Clear and reliable document answers – Quickly extract key information without reading everything.
- Simple setup and use – Just install, add documents, and start asking questions.
- Requires .NET Desktop Runtime and Visual C++ Redistributable – Standard Microsoft runtime components must be installed.
Click on the links below to Download the latest version of BitSphere Private Document Chat Pre-Activated!