Get the installer of 声優養成テキスト（日本語の常識編） 4.0 for free and have a look at users' reviews on Droid Informer. The app can be launched on Android devices 8.0 and above. This application is totally secure for downloading. （株）IAM is the creator of the tool which is included in the Educational category.
声優養成テキスト（日本語の常識編） has been downloaded and set up by over 50 users and its latest update was released on Nov 14, 2019. Google Play shows that the app is rated 4.5 by its users.