Learn programming was downloaded and installed by over 1M users and its most recent stable release was on Sep 19, 2018. Take into account ads and in-app purchases while installing the tool. Samsung and LG users highly appreciate this application.
You can get the .apk installer of Learn programming 6.7 for free and have a look at users' reviews on Droid Informer. The file size doesn't exceed 21 MB and the app can be launched flawlessly on Android 4.1 and higher.
As users state, you can notice such an advantage of the app as an awesome UI. Users leave reviews pointing out that you can find grammar errors and lots of ads among the drawbacks of this application.