Effective date: July 15, 2026
Last updated: August 6, 2026
Arca ("the App") is a local-first link-saving application provided by
Checkndo ("we," "us," or "our"). This Privacy Policy explains what data is
processed when you use the App and how you can delete it.
You can use Arca without an account. In local mode, your link library remains
on your device and is not uploaded to Arca's sync service.
If you sign in with Google or Apple, Arca creates an account through Firebase
Authentication and uploads your link library to Arca's Cloudflare-based sync
service so it can stay in sync across your devices. Signing in is optional.
Advertising, subscription, authentication, and web-page services described
below may still process limited data independently of whether your link
library is synced.
You can delete your account from Arca > Settings > Delete account. After
you reauthenticate, Arca deletes your synced link repository and Firebase
Authentication account. Account data stored on the device is also removed.
If you cannot access the App, email
[[email protected]](mailto:[email protected]?subject=Arca%20account%20deletion%20request)