The Australian Government required you to have an app called MyGovID to do you business taxes and other administrative tasks. This app is only Apple or Android, there is no web interface.

That’s crazy. Why no web interface? In Poland for taxes we have a web interface that is mobile and stationary, and for many other things it’s a choice between an app and web and paper.

The tax part is all web, it just mandatory 2 factor authentication to login that requires the app.

Ahl. In our case, we have mobile app 2fa, but also an sms 2fa, and authentication through bank login - it’s quite neat that the government struck deal with a bunch of banks, and they serve as identity providers too.

Not a requirement, but in Poland a ton of administration things can be done from a dedicated iphone/android app - including using your official ID. It is optional though, and you can alway do the same stuff (ID aside) from the web, or using paper and going places in person.