The platform is great. Used it for quite a lot of courses already. But the app is far from good. A lot of bugs and glitches. The one that currently makes me write this review is that there is no point downloading courses cuz it won't even look in your own storage before it loads your courses list from the online database... At least they are not accessable on my samsung s8... I get message "looks like you are offline, please connect" or something like that...