Banking 90+% of apps work. Some apps officially support GrapheneOS.

The vast vast majority of apps (99%+) are compatible and those that are broken is due to bugs in the apps which GOS catches, but these exploit protections can be disabled, and apps that use the monopolistic play integrity api.

The only apps that are permanently broken are those using the strongest play integrity api which is security theatre.

Here's a community created list of banking applications and their current status on GOS.

https://privsec.dev/posts/android/banking-applications-compa...

Why would you use app for actual insuranceb or even healthcare?

Chase bank app wont even load on my GrapheneOS lol