This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own Arm Wrestle Simulator session. It will not click the shop.
Drop probability
At least one hatch
Estimates the chance of seeing a pet at least once if every egg is an independent roll. The default 1% is the published Frog chance on the School Earth egg, not a universal rate. Replace it with the percent printed for the pet you want. Luck boosts, multi-hatch purchases, and pity are not included. Eggs whose listed chances do not add to 100% are a bad fit for this model.
Chance of at least one success = 1 − (1 − chance per attempt) raised to the number of attempts.
Default chance is the published Earth egg Frog rate of 1%. Type the rate from the egg you are actually opening.
