I heard there's a way to know where the mythics are in those booster boxes. Does anynody know?
You used to be able to "Box Map" where you put in the serial code and the rares in a few packs and it would tell you the rest of the rares/mythics. It no longer works (boxes after DGM) though, as WoTC has been more careful.
Google box mapping.
Im sure it still works, its just much more complicated.. My reasoning is unless someone deliberately mixes it up, theres only so much randomness, there is likely some code its just likely ultra complex
Just a theory though
Is there and app?
You shouldnt do it cuz its probably morally wrong IN MY OPINION(thats the important part).
May i ask why youre doing this?
And you can find programs to do it online, just buy an older box itll be much easier(innistrad etc..)