help/privacy/guest-plans-and-deletion

Plans before you have an account

In the iOS and Android apps you can start without an account. Those plans stay on your device and are never uploaded. Deleting the app or clearing its storage removes them, so export a JSON file first if you want a backup. The web version always needs a free account, so web plans are saved online from the start.

After you save an account

Plans tied to an email and password stay until you delete them. You can delete a plan inside the calculator. If you remove someone you shared it with, they lose access but your plan stays put.