This is the Sagan demo โ€” a public archive on a small cloud server running Azure OpenAI, so you can try Heirloom without installing anything. The real product runs fully offline on your own device and keeps nothing on a server; here, treat it as public โ€” anything you submit is visible to others and wiped nightly.

A sealed letter for you

A passphrase, please

This is local to your device.

Local-first ยท Nothing leaves without you