I opened this, drew a card, read everything I was able to, and then closed it in under 10 minutes after seeing the "cards stored" limit and rate of xp, because i got the feeling that although there might be deeper mechanics later in that deliver the active gameplay promised in the description, that I'll have to babysit it checking in without feeling any real progress (or, critically: dopamine) for hours or perhaps days.

I'm not leaving a negative rating because I understand some people don't mind this and this sort of extremely slow progress just isn't for me, but if you're passionate about htis project I'd suggest brainstorming and coming up with some new mechanic to add to make the early game more compelling. I think you could probably come up with something that only improves the first few hours or allows for checking in for a more extended periods in the early game without impacting the late game too much.