>>82408747
>>82408946
I've been using it for a couple of months now. The gamification of learning is distasteful, I turned my profile private to opt out of the dick measuring leagues and yet it still updates me every now and then about my position in some league I can't even access.
The xp boosts and all that crap can be ignored, just do the exercises.
I seldom get adds, and if I do they are their own asking for shekels.
As for the 5 mistakes a day, you can practice simpler lessons for hearts. Sure it is annoying, but if I fuck up 5 times in a row maybe I either need to practice something or study another resource to complement what I am failing at right now.
Just don't be a dopamine addict and use more resources.