Lite mode has all the features just that they are limited. Like you can only have one intraday chart at a time. You cannot draw all kinds of annotations on chart. You can backtest and scan stocks but not all Trading Systems are available. You can create Trading Systems but you cannot save it; you can get a feel about how to define Trading Systems and if it looks like a thing that you want then you can decide to use Pro Mode. I am not listing everything here but I hope you get a point.