How many authenticator apps do I need?

I've got:

- Google Authenticator on my iPhone/iPads

- Authy (on some platforms)

- 2Stable

- RSA Authenticator (which seems incompatable with the Google one)

And now ID.me wants me to download their authenticator app.

Hey guys, can't we just have ONE standardized time-based authenticator that runs on Windows, Android, MacOS, iphone OS, iPad OS, Linux, and maybe *BSD?

And also, not cost $50/year - I'm looking at you 2Stable.