It's also the only permitted method for 2FA which is required to make online payments. Even logging into the website requires you to approve the login on the app.
The second bank app is also my primary way of sending money to/from my friends, for example if we split the bill at a restaurant.
So the answer is several times a day.
Nobody has used paper checks here since the 90s, that's not what the app is for.
I mean the fact that GrapheneOS and PureOS and Plasma Mobile etc. are not even in the running for me is probably a good indicator that where it's placed is first.
- N Banking Apps
- Whatsapp / Telegram
- Uber/Lift/ Whatever your local flavor of theses are, or even regular taxi apps
- Deliveries and Groceries (I don't have/need a car, I get most of my groceries delivered, and just but fruits and vegetables on a farmers market near my house)
- Some payments app
- Access control for my building
- Navigation
- Entertainment
- 2FA/OTP
Many of these are local apps that have 0% chance of getting built for anything outside of Android and iOS, and further, some would break on GrapheneOS / Plasma / A stock rooted device (I'm pretty sure at least one of my banking apps auto closes if it even detects Developer options enabled)