Banks app works? Also other apps?

People ask this kind of thing about Graphene too, but the reality is a very large number of 'apps' are just website wrappers. In the vast majority of cases you can just use the website instead. Add to that though, you are going to have to leave some things on the table to fight this fight, and you have to decide what is most important to you. I used to use my phone and watch to pay ALL THE TIME, I wouldn't even take my wallet with me most places I went. When I switched to Graphene I had to give that up, but was willing to for what it gave me. We are likely never, or certainly at least not any time soon, going to be able to have everything we can have on an iPhone or a Samsung, on something that respects our privacy and isn't spying on us.