Android application and browser versions of the website

I have subscribed VIP subscriptions for both app version and browser version but it seems both are different as there is no learn or challenge options in the android mobile app version and here are the screenshots attached

What is the difference between browser version and app version if we are taking subscription why it doesn’t show full content as web version

Please give me an utmost reply so I can see which one I can cancel and which one I can go ahead with