I have tried HTML Code Play (Android, iOS), really it is an awesome app. Most of the HTML tag is I learned from that application, I think some unimportant tag is missing there, can anyone suggest me any other app like HTML Code play.
I tried solo learn but it is very worst because they are trying to study the code also no example is there.
I think you have all opportunists to develop an education app, get know all about that from internet. A lot of information you can find in google.