authpass VS Gotify

AuthPass - Dart Password Manager based on Flutter for all platforms.

I keep my KeePass file on PC, sync to Onedrive, download to my phone from Onedrive iOS to have locally and use this app on iOS to open it.

https://authpass.app/

Works great.

Anything KeePass-compatible, like AuthPass.

You can use "AuthPass" that is also a keepass version support cross platform and its open source.

If you are willing to set up a WEBDAV server on your Mac, you can try AuthPass, which is FOSS project that uses KeePass password database.

AuthPass - KeePass compatible Password Manager 1.9.1: Keep your passwords safe across all platforms and devices.

Wondering, since flutter can compile to Desktop PC, too (e.g. AuthPass), would it be possible to build some sort of desktop client, a bit like Picasa?

I use apprise with Gotify

You can self-host a notification service using https://gotify.net/ for example, but you may need to ask the user to disable battery usage restrictions if you don't want the OS to kill the background process.

If you do not need the state tracking, but instead need something that can deliver push notifications to you, check out ntfy and gotify

Gotify (version 2.5.1): A client for receiving push notifications

I've found Gotify to work well for that

Just FYI - there's also shoutrrr and gotify with similar functionality. I've tried them, they're very good, but not fitting my (very humble) needs.