This is great, thank you! It crossed my mind in the past that we were missing an app like this.

How may apps have you written now? Seriously, I don't know where you find the time. Really appreciate it.

Ability to filter the model by unit and copy/paste individual messages would be useful, as well as retrieving journal entries that were written before the app opened (if that's possible).

Out of curiosity, how does the app work? Does it listen for messages as they are written to the journal via dbus or something like that? Or does the app use root privileges to read the journal?