You are right. Some users will forget to save the URL, and that is the main drawback of a no account system. I chose this approach first because I wanted people to start using it in one second with zero setup. But I also agree that an optional backup would help the people who want more safety.

I am testing a small optional backup flow that keeps the tool simple but gives an extra layer of protection for users who want it. The goal is to keep the zero friction feeling while giving a safe path for long term use.

Thanks for pointing it out.