How crucial are banking apps? Your experience with them vs. browser banking?
Banking apps seem to be a motif among things that don't play well with privacy ROMs. My bank's website does everything I could want out of it. I think I might be ignorant to something.
What about banking apps is especially compelling?
How often do banks put must-have features behind an app?
And should I be concerned that banks might move away from offering services through browsers?
Depends on the country. I'm teaching in Thailand and here you can't do any banking through a browser. You can only use the bank's official app and you don't even have a login/password for it, you have to go to the bank and activate the app in person as a foreigner (I think Thai citizens can do it online but foreigners have to do it in person). Nobody takes actual cards for the payment and you pay everywhere by scanning QR codes which has to be done through the app. If you buy a new phone you have to activate the app again at the bank's office. It's really annoying and the reason I probably can't go with GrapheneOS or any other custom roms because the bank app is absolutely essential.