Privacy Policy

Applies to: OpenSI for iOS · Effective: September 15, 2026

This policy is issued by Guizhou Yunyou Information Technology Co., Ltd. ("we", "us") and applies to the OpenSI iOS application (the "App"), the mobile companion to our Omni desktop assistant. OpenSI is a single-user, private AI assistant: you run the Omni server on your own computer, sign in to the App with your Tomorrow Gravity account, and pair your phone with that computer by scanning a QR code, giving you access to your own files and compute. Your files and conversation history stay on your own devices — we keep no copies on our servers.

1. Account information, and what we do not collect

Using the App requires a Tomorrow Gravity account. Sign-in is handled by our unified identity service (Casdoor), which processes the account details you provide — such as username, nickname, avatar, email address or phone number — solely to confirm who you are and which subscription entitlements apply. We do not collect the contents of your files or conversations. The App contains no third-party advertising or behavioural analytics SDKs. We do not track you across apps or websites, do not access the Advertising Identifier (IDFA), and never sell your information or use it for advertising.

2. Device permissions the App uses

• Camera: used solely to scan the pairing QR code shown by the desktop app. The camera is not used for anything else; no images are stored or uploaded.
• Photo Library (read): accesses only the images you explicitly pick, so they can be attached to a prompt you send to an AI engine you have authorised. We do not read anything else in your library.
• Photo Library (write): used only when you choose to save an image back to your album.

Each permission is requested the first time you use the corresponding feature and may be declined; declining affects only that feature. You can revoke any permission at any time in iOS Settings.

3. Data stored on your device

• Pairing credential: the device token created when pairing is stored in the iOS Keychain. It is used only to prove this device's identity to your own computer and is never uploaded to our servers.
• Sign-in credential: the session token issued when you sign in is stored in the iOS Keychain. It identifies your account to our identity service and is cleared when you sign out.
• Local preferences: such as the last active workspace and interface settings, kept on-device only.

4. How data is transmitted

The App communicates with your own computer to read and write files, run compute tasks, and sync sessions. When you send a prompt to an AI engine (such as Claude or Codex), your input is transmitted to that engine using credentials you configured yourself, for the sole purpose of generating a response. You choose the engine and supply your own authorisation; that provider's own privacy policy governs its handling of the data. We neither intermediate nor retain this content.

5. Security

Traffic is carried over encrypted channels. The pairing token is held in the system Keychain and protected by iOS. Because your data resides primarily on your own devices, please keep your devices and passcodes secure.

6. Deleting your data

Signing out clears the session token on your phone; unpairing the device clears the pairing credential and preferences stored there. Files and conversation history on your computer are under your own control — delete the relevant directories to remove them. To close your account and delete the account information held by our identity service, contact us using the details below.

7. Children's privacy

The App is intended for users comfortable operating a personal computer. It is not directed to children under 13, and we do not knowingly collect personal information from children.

8. Your rights

You may access, correct or delete your account information, or close your account altogether, by contacting us using the details below; we will verify your identity and respond within a reasonable period. Your files and conversation history are not held by us at all — they remain on your own devices, under your own control.

9. Changes to this policy

We may update this policy from time to time. Updates will be posted on this page with a revised effective date, and material changes will be signposted.

10. Contact us