Quite good.

One of the better pokedex apps for the iPhone. As far as Ive seen, all the information is correct. /HOWEVER/, the ability list is quite pitiful. It seems like it was done at the last minute; I did a quick scroll through, and half of the abilities listed arent even real (ex. Aqua-boost, Back-hole, Celebrate). Its laughable how bad the ability list is. Other than that, fairly good app. Maybe in an update or two, a few new features, itll be 5 star level.

Masterbuizel about PokéMaster Pokédex For Pokémon, v4.0