PDC ダメージ計算 is a free mobile app for Android devices and tablets that is developed by corombo13. The interface is intuitive and user-friendly, you won't have a hard time navigating it.

With this game, you can encounter characters and dungeons and you can also select a party mode that switches between 2 people, solo, or even 3 people mode. You can see this at the top of the main screen.

It's very easy to play the game and there's even a character setup guide that will help you get set up in no time! You can also check out the PDC website for more info.