[zzo38computer]

It should not be required if you do not want sync across devices, bug reports, etc (or if you just want to copy the configuration by yourself instead). However, apparently it requires anyways, and that is no good. It also should not require an internet connection if you are only going to view local files and/or LAN.

[daruk]

It definitely won’t let me progress past the login screen on iOS without first creating an account on a Mac. Seems like an odd UX decision.

[pfych]

The iOS app is not a standalone browser, it's a reader for pages saved on your Mac Arc instance.