U can sandbox each web app. So they can't communicate with eachother. So basically run multiple versions of the same web app on different accounts. Think app cloner.
Doesn't fill up your default browser history with a bunch of nonsense.
Also installs it as a stand alone app, which is the problem you're having correct?
Oh yeah, and it's open source.
Yes. I’m in the free KeePass ecosystem. Self hosted via iCloud and backed up to Proton Drive.
KeePass2Android no net on my Android.
Keepassium on my iPhone.
And KeepassDX on my desktop.