How solo learn compiles the code which compiler do they use

Question

Compiler for android app to compile all code

Answer 1

https://play.google.com/store/apps/details?id=ru.iiec.pydroid3

You may use this .

Actually sololearn compiler is not interactive.

Answer 2

But which compiler do they use

Answer 3

Hay bro it is not fix for different programing languages it uses different compilers.
Because pattern of creating byetcode for different languages is different.

Answer 4

I know would you please tell all the compiler they uses