This policy explains what Cairn ("Cairn", "the app") does and does not do with your information. It is written in plain language.
Information we collect
Cairn does not collect personal data. There is no account and no sign-in, and the developer does not receive, store, or retain information about you. Some data is used only on your device, and only with your permission:
- Mind-map content you create (node text, structure, confidence states)
- AI provider API keys you enter
What Cairn does not do
- No accounts and no sign-in
- No advertising
- No analytics, telemetry, or tracking
- Nothing sold or shared for advertising, ever
Network access
Outbound only, and only when you take an explicit AI action (a verb, Converge, a scan, listing models, or testing a connection). Requests go to the provider you configured: Anthropic (api.anthropic.com), OpenAI (api.openai.com), Google Gemini (generativelanguage.googleapis.com), or a custom or local endpoint you supply (for example a local model at localhost:11434). The app makes no calls on a timer and no calls on its own. The Tauri auto-updater is compiled in but inert in this version and makes zero network calls.
Bring your own key. Keys for Anthropic, OpenAI, Google Gemini, and any custom or local endpoint are stored only in the macOS login Keychain under the service com.cairn.Cairn. They are never written to settings, plists, or logs, and the interface can only learn whether a key exists, never read it back.
Cairn has no advertising, no analytics, and no third-party tracking.
Third-party services
The following may be involved, and only for the purposes above:
- Anthropic (only if you configure an Anthropic key)
- OpenAI (only if you configure an OpenAI key)
- Google Gemini (only if you configure a Gemini key)
- Any custom or local AI endpoint you choose to point it at
Data retention
Because the developer never receives your data, there is nothing for the developer to retain. Your content and settings remain on your device until you remove them or uninstall the app.
Your choices
You control any permission the app requests in System Settings → Privacy & Security, and you can change or revoke it at any time. Denying a permission only disables the related feature; the rest of the app keeps working.
Children’s privacy
Cairn is a general-audience utility. It does not knowingly collect any information from anyone, including children.
Changes to this policy
If this policy changes, the date above will be updated. Material changes will appear here before they take effect.
Contact
If you have any questions about this policy or your data, please write to tulaihia@gmail.com.