Talk to the Poketch President after receiving 7 gym badges.
Number 123987456
http://www.pokezam.com/games/ds/diamondpearl/poketch3.jpg
you need the marker app for your poketch. it will show up on it after you encounter it on fullmoon island.
You must have the Downsing app for your poketech. u must use it to find it. it will be by the exit of the first hotel from, route 213, or south.
There is no king in Pokemon pearl
You get the app from the president of the Poketch company in Jubilife City after winning the Veilstone City Gym battle. In Pearl, this app is used for tracking Mesprit and Cresselia
A resident in Solaceon town will give it to you.
The Pokemon Diamond and Pearl series can be watched on the official Pokemon TV website or by watching them using the Pokemon TV app for iOS and Android. You can also download the Diamond and Pearl episodes legally through the Pokemon TV app, but only up to 3 episodes at a time.
A woman in the Eterna City Pokemon Centre gives it to you.
from a woman in eterna city's Pokemon city
You can get the Happiness Checker Poketch App by talking to a woman in Eterna City's Pokemon Center. This app allows you to see how much your Pokemon likes you.
You get app 11 at the vielstone department store ( i dont remember which floor sorry.)
Number 123987456
The dowsing machine is a poketech app which scans the ground for hidden items. It is app no.7.
If you have the happiness App. for your pokewatch thing... you can see how much your Pokemon loves you (how happy they are).
you need to get a poketch that has an app for the time set to you ds
you touch the screen with your stiylist