I really like the app, but I personally hate that you are forced to participate in a weekly leader board. I'm here to learn not compete with strangers. I find it incredibly distracting/counter productive. If there were a way to opt out of it I'd give it 5 stars. I'll keep paying for now, but if opting out isn't added I'll probably cancel and switch to another app. UPDATE: Canceling paid subscription. Emailed more than once with feedback/questions with zero response. Not even a canned reply.