The stopwatch app can only be obtained through a special Nintendo event. You can't obtain it through regular gameplay.
it app for
There are a lot in the Poketech Company in Jubilife City, a woman gives you a Poketech App in the Pal Park, and a woman gives an App to you in the Jubilife City Condos.
Get the berry app on your Poketech by vusiting the Poketech lab in Jubelife City
You find it by walking around into different towns and it will show you where it is on an app on your poketech.
You can get it from the PokeTech App place in Jubilife City.
Talk to the poketech guy in jublife city who is inside the poketech building. If you have won the fourth gym badge, he will give you the marking map app.
there is a poketech app that shows you what lvl your poke is at the daycare. not sure where to get it. look on a poketech app walkthrough
Get the dowsing machine app on your poketech and look for it using that. It is in between the hotel and her house. Submitted by awesomeness
you get the dowsing machine from dawn or lucas after beating the team galactic in eterna city
Keep on Talking to the Inventor of the Poketech when you have all 8 badges. He will eventually give you the MARKING MAP.
it shows roaming Pokemon
enterna citys Pokemon center (speak to first lady with brown hair first floor)