My bank offers both an app and a website which is nice, but the app is mandatory for doing any kind of operation involving money (which is not that uncommon when logged-in in your bank accounts ;) even when connecting through their website, as the app is used for some ID-ing process.
Then, there are a few not-mandatory but such-an-effing-pain-to-not-use apps, say to ID oneself with some (public) services.
I use a dumbed down iPhone (like, really: no social, no games, no whatever not even email is configured on it) just so I can access those few apps.
Well, Debian has a 32-bit ISO, and since Ubuntu is based on Debian you may consider giving it a try?
https://www.debian.org/distrib/