It is very easy for use even if you are beginner user of anychart extension qlik sense.It has lot of options which can be used as per your requirement.I have no dislike about this tool but I think they should improve some minor bugs like slow loading time or lagging while using tools etc.
If anyone wants more information then please contact me through my email id that i provided at top right corner. We were solving many problems related to data visualization where users could easily find out their business insights from huge amounts of raw unstructured content (like emails).