hoenn
people all over will give you poke apps also the Pokemon company in jublife city invents poke apps so go there offtan
What game?
you find them or people give it to you
find them
at the poke app store in jubilife city when you talk to the president on the right door.
look for them all over sinnoh
you open a diamond with another diamond stick a ball in it ,put it back together and poke it!
You get the poke radar as a reward for obtaining the national dex by seeing all the Pokemon in the sinnoh region
depends is it the poke balls cuz all u gotta do is buy them at the poke mart
i play that game and asked the same question but forgot to share
There are 25 poke apps total, 3 of which are only available by Nintendo event. For these apps descriptions and locations, check out this page: http://www.psypokes.com/dp/poketch.php Hope that helps!
look i do not know lolz