Starting February 4th a new feature will be available!
POKEMON CATCH RATES and POKEBALL CATCH VALUES
Each Pokeball has its own possibility of catching a specific Pokemon.
(POKEBALL)- range =(1-100)
(GREATBALL)- range =(10-100)
(ULTRABALL)- range =(20-100)
(MASTER BALL)- range =(200)
Even though the possibility of catching a Pokemon will be greater, the only way to ensure a perfect capture is if the Pokemon's Catch Rate is lower than the PokeBalls Catch Value.