It’s not the mobile OS so much as the fact that I want something I can troubleshoot easily and isn’t hidden behind several layers of UX. KeePass satisfies that. I just shared my mom’s database file with me on Drive so I can also access it in case of issues. If not, I’d need a service that can support like family sharing and shit and they may ask for extra money. This is easier and more secure since my mom has no idea how to share things from Drive so she won’t even do it by mistake.
The auto fill part is relatively straightforward to us but it takes a while to get used to for the previous generation. In fact, despite showing her how to create new entries, she spent the last 2 years still writing it down in her Google Keep notes app. Had to spend a non trivial amount of time transferring them over this holiday.