Why did SoloLearn kill Apps.

Question

Since not a long ago, sololearn updated the single apps (Like Learn C++) to kill them. it now forced you to use this App that needs internet connection for almost everything.
So why kill others apps?

Answer 1

I honestly prefer to have a single app where I can control easier all my courses.

Answer 2

Really? I found Download Asset for offline in the app and this will allow users use app without internet