Sololearn Android app is made of native Android or hybrid?

Question

I wanted to know the language used for sololearn frontend and background programming.

Answer 1

Taking into account that the development cycle of the versions for IOS and Android have a different release cycle (the IOS version is always a few versions behind with respect to the Android version), it is likely to be a native development.
On backend Sololearn uses ASP.NET in its website, so it would be logical to think that its API also uses the same technology.

Answer 2

The whole app is probably written in Java