Karma points lose due to syncing issues
I use Todoist on Chromium, Firefox and on my Android as a native app.
Sometimes I wouldn't use it on a of those for several days. If I'm away from my PC, I'd use it regularly on my Android, and when I come back I see (for a split second) that some tasks are a few days overdue, till it syncs back to current state.
Not that I care of, it's a nice feature but really meaningless to my experience, but the score drops by a few points every time that happens. I guess that the web app informs the overdue tasks from what it remembers of last session before it syncs with latest data.
I am absolutely sure about this since I cannot recall the last time I haven't used Todoist for more than 24 hours.
Which is just like saying - You're Awesome.