This is not something I typically use, but I figured some here might have some suggestions. I'm looking for suggestions of apps that would run on iOS and help with security, like saving passwords, generating unique random passwords, etc. I looked around and a lot of it looks to be paid or big tech. I'd really prefer something that's open source and works well.
Needs to be beginner friendly. I'm trying to help a kid grow up a bit and learn to be more diligent about security and not getting accounts compromised all the time like he currently does. Encrypted files backed up on own hardware, etc, etc, etc. like I do is just way over his head.
I have used https://keepass.info (or forks of it on various non-windows platforms) for over 10 years. I have no complaints and it has met my needs. The database is an encrypted file that is local, you move it around in the ways you want to move it around (I use a file-share). It will do version-synchronization in client (download new database you changed on another device, and merge it with your local file into one file that you share from then on). It will do auto-typing (username TAB password ENTER) but most websites these days deliberately design to make that annoying or impossible, which is unfortunate.