Your machine is the backend
Grafyn is a desktop app. There is no Grafyn account and no Grafyn cloud. The folder is the product.
What stays on disk
Markdown notes, search and graph indexes, canvas sessions, settings, and twin evidence all live under ~/Documents/Grafyn/ unless you choose another vault path. Delete that folder and the data is gone.
What can leave
Model prompts
When you send a prompt in the canvas, distillation, or twin answers, the context you assembled goes to the runtime you chose — OpenRouter, a hosted model API, whose data policy then applies. Optional web search is per prompt and visible in the UI. If you run models locally with Ollama, nothing has to leave the machine.
Update checks
The app asks GitHub whether a newer release exists while it runs. That is the only request Grafyn makes on its own.
Nothing else
No analytics, no telemetry, no crash reporting, no account.
API keys
Your OpenRouter key is stored in the OS keychain, not in a config file sitting in the vault.
Twin evidence
Grafyn does not train on your data. Records you mark rejected, private, or no-train are never used in live answers. Exports exist so you can train elsewhere, on your terms.
How to delete everything
Quit the app. Delete the vault folder and the data folder. Uninstall the binary. That removes your data.