i have a little trick, i dunno if it's dumb. for example the kage treasure, the rare drop rate are usualy 60 scrolls right, then just count all you rare ninjas from kage treasure. 1 ninja=60 scrolls

You might end up over or under stating how much you actually pull since 60 is just the average. That's how you see people that went over the super rare range but they most likely just estimated. It's not that hard to just record the free pulls and seal scrolls you made in a excel file.

Yea it sounds like there isn't a way? People just keep track on their own I guess?

best way is to have a papper, each time u get a normal ninja (10 draws) put a *.