What is the Counter Pick Mastery for Dota 2 application, how does it work?

According to the introduction of OttenApps, Counter Pick Mastery for Dota 2 is a Entertainment app on the Android platform. There is currently a 1.1.5 version released on Feb 21, 2020, you can see the details below.

Draft mode provides users with counter picking suggestions that will ensure the enemy team is countered while maintaining balanced team roles. Included with every
suggestion are clear descriptions of why the hero was suggested and how to use them.

Unlock draft practice mode to test your counter picking skills in a simulated draft.
Receive detailed feedback and a rating for your draft. Don't always rely on counter picker apps, BECOME a master counter picker!

Quiz modes allow users to test their counter picking knowledge against individual
heroes.

Counter picker guide provides users with complete and detailed descriptions of
countering tactics and abilities for every Dota 2 hero.

Legal Disclaimer:
This app is not created, sponsored, or endorsed by Valve Corporation. This app is not an official app or connected to the game's developer or publisher. All of the in-game imagery, references, characters, and names are copyright and/or registered trademarks of Valve Corporation and usage for this app falls within fair use guidelines.

Updated hero list and included multi-hero select