Полиглот. Английский язык is completely secure for downloading. The tool was originally developed by AxiomMobile and it is listed among the Educational category. Users rated this application 4.8 on Google Play.
The developer rolled out a new version of Полиглот. Английский язык on Sep 13, 2020 and over 100K users downloaded and set up the app. Some in-app purchases and advertisements are included into the tool. Samsung and Asus users recommend this application.
It's free to download the installation package of Полиглот. Английский язык, also, you can check out users' reviews on Droid Informer. The app runs on Android 5.0 and above.
As users indicate, the app has such a drawback as intrusive ads.