A private AI on your own computer

The model runs on your computer

Twoody installs an open model, Qwen3.5 by default or another of its catalogue, and runs it with its own engine, llama.cpp; on a Mac with Apple silicon, MLX too if you install it. That model reads your messages and writes the answers. With a free account, Twoody uses only the models of your own computers. Once the model is installed, Twoody keeps answering with Wi-Fi off.

What stays on the computer

• Your conversations, your memories and the index of your documents, in Twoody's data folder, in a database it encrypts (AES-256) with a key kept by the system: the keychain on a Mac, your user account on Windows, a key manager on Linux (without one, the database stays in clear).
• Your documents: Twoody reads them where they are, without copying them elsewhere.
• A private conversation, kept on that computer only.
• Your voice: dictation is transcribed on the computer, and your voice is not sent.
• A walled-off project: its documents, conversations and notes are used in that project only.

What leaves it, depending on what you turn on

• A model you install, downloaded from Hugging Face; its fingerprint (SHA-256) is checked before it is used.
• The update check on downloads.twoody.com, without an identifier of your computer.
• Web search, off by default: your search goes to the engine you choose, not your files.
• A connector you add: it receives what you allow.
• During the beta, technical diagnostics without your questions, answers, documents or file names, shared by default: untick “Share technical diagnostics with twoody.com” in Settings › Privacy.
• The conversations you keep on your optional account, encrypted end to end.
• The other services you link yourself, such as your Home Assistant or an Outlook account: the Security page lists each one.

The account only links your devices

Twoody on your computer works without an account. The Twoody account is free and optional, and links your devices: the iPhone app, your other computers, your household. The conversations you keep on it are encrypted end to end on your devices, and Osmove holds no key that can read them; the relay between your devices sees that they talk, when and how much, but does not have the keys to read what they say. Conversations kept on the account before this encrypted history stay readable there until you erase them.

How to check

Once the model is installed, turn Wi-Fi off: Twoody keeps answering and reading your documents. A firewall app shows each connection it opens. The Security page lists what leaves the computer and when; the privacy policy describes everything Twoody processes.