What is the Learn Spanish Free application, how does it work?

According to the introduction of MetaLanguage, Learn Spanish Free is a Education app on the Android platform. There is currently a 5.2 version released on Nov 26, 2018, you can see the details below.

Learn Spanish is a simple app for anyone who wishes to learn Spanish fast and easy. It is perfect for beginners and advanced users. Recommended for those who wish to travel to Spain or South America.
Features:
*High quality translations made by Spanish citizens
*Create your own favorite list
*No Internet connection needed

What's new in version 5.2 Added 3 new categories: Interview, Car and Work