Pixel 9 running GOS. My bank's app (Lloyds) won't work, and never has for me. Additionally, I have a store card, and credit card app, both of which are offered by NewDay, neither of which work on my phone. The official UK government ID app won't work with it either.

But honestly, I'll take that inconvenience over letting Google have free reign over my phone.

Some banking apps work fine. There's a list somewhere. Fortunately my bank does work

I also use GrapheneOS on a Pixel 8 here. My banking apps don't work. They used to work just fine, but they decided to push updates making the apps ununsable on non-Google certified OSes.

Exploit compatibility mode fixed my banking apps.

Depends on the bank. My banking app works fine.

you can get around a lot of detection with stuff like microg/kernelsu and other layers of arcane bullshit technomagic

Mine works. The app always cries about lack of play services, but the notification has an ignore-button and it hasnt created problems yet

List of potential workarounds for problematic apps: https://discuss.grapheneos.org/d/8330-app-compatibility-with-grapheneos

Also includes a link to an unofficial list of known working/not working bank apps. If the app still doesnt work there is a link to documentation for the app developers on how to implement support. It is good to include it if reaching out to your bank about this issue.

Personally, no.

Consors bank app works, but I prefer hardware TAN generators and a desktop browser.

GrapheneOS has a community maintained compatibility list. Mine was on the list and it works well, and its updated quickly if something breaks or a new provider manages to work.

my bank app refuses to run if the installation source is not Google Play Services. I make a private space with GPS for the app and that solves my issue.

Use a computer, or a web site. Or a bank.

Why would you ever carry your entire life’s worth in your pocket. Ever?