http://www.newsweek.com/pokemon-go-gen-4-update-evolutions-candy-1172975 > Gen 4 is finally live in Pokémon Go, and a big part of collecting the new ‘mon is evolving Pokémon. > Luckily for Pokémon Go players, the Sinnoh Region Pokémon released on day one  won’t need too much candy to evolve. There are some exceptions, like the Gen 4 starters who need 125 candy to go from stage one to stage three. However, most only need 50 candy to get to their final stage.