I want to be able to mental arithmetic! But, difficult, and I hate studying. All right! If this app, you can master the mental arithmetic by shooting. In front of you, the calculation will appear one after another. If you shot the correct calculation, you will get the score. But, don't worry about such a thing, let's shoot Bang Bang!
Hikari Nakashima（中島光） is the developer of this application which can be found in the Educational category. The latest update of STG was released on Dec 17, 2016 and the app was downloaded by over 1K users. On Google Play, the tool was rated 4.8 by its users.
Keep in mind the important moment: adverts are a part of this application and it provides in-app purchases. Download the free installation package of STG 1.0.4 and read users' reviews on Droid Informer. The app runs on Android devices 2.3 and above. This download is completely safe.