The app is currently compatible with the Splatoon 2 game, giving players the ability to access SplatNet 2, invite friends to online matches, and voice chat during various game modes. Both the app's functionality and online play are free, where available, until the Nintendo Switch Online service launches in 2018.
With the app and the Splatoon 2 game, you can access SplatNet 2 to see your online play stats, check out upcoming game stages, and more.
You can also invite friends who have the game to Private Battles, League Battles, Salmon Runs, and Splatfest Battles via social media and other services. When players are invited to a game, they'll get an instant notification on their smart device.
The app lets you chat with friends in your Splatoon2 online lobby and then talk to your teammates to coordinate strategy during the online match.