The simplicity of this site is amazing and it's really easy to use. Though for it to be more useful, you could have separate urls for when people create a new list, this way they'll remain consistent through devices and you can view it from any device.

And it doesn't need to be anything fancy, just a global unique key that's different for each list like 'https://nofusstodolist.com/35dh298'

But anyway, if that's not what your intended use scenario is then you don't need to add that since it does get what you want to get done!