so I know that they both evolve sinistea but what is the difference?
The Cracked Pot evolves normal Sinistea.
The Chipped Pot evolves rare Sinistea (1% encounter chance), which its evolution now having a small authenticity stamp on it.
They both have small visuals differences in the bag, with the cracked pot having a hole and a streak, and the chipped pot having three holes.
Cracked Pot (sorry for the small image)
Chipped Pot (sorry for the small image)