Add undo button!

I like this game. What would make it even better, adding an undo button for people who accidentally buy things that are useless. (Both real money(gems/coins purchases with ITunes )or in-game cash(coins/gems in the game that you earn))
Or, add a confirmation just in case we accidentally tap something. Story for the length!

sıɥʇ pɐəɹ oʇ ʎɹ┴ about World Chef, v1.25.4