In jubilife city.
The Badges work like this Badge no. 1:New app from pok'etch company 2.Pokemon up to level 30 obey 3.New app from pok'etch company 4:Pokemon up to level 50 obey 5.New app from pok'etch company 6.Pokemon up to level 70 obey 7.New app from pok'etch company 8:All Pokemon will obey you
There is no such app, there is only an app which can show you where roaming Pokemon, such as Mesprit and Cresellia are, called the Marking Map (which can be obtained from the president of the Poketch company after obtaining the Veilstone badge).
The marking map app can be found in Jubilife city from the Pokétch company. Talk to the owner and he will eventually give it to you.
yes you find a flame plate in stark mountain although its hidden and you need the dowsing poketch app.
on the touch screen after you receive the app.
you come with it!
You must have 7 badges then talk to the president of the poketech company in jubilife city and he will give you the app
It makes the Pokemon you tap 'cry'.
you get it from a person in Solacean town.
get the Poke tech App Poke happyness
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.
You get it from a women on 1FL of the Pokemon Centre in Eterna City.