We have been using it for over a year and it's a pain. Lots of extra work for staff. Buttons such as "upload an excel file" cost more money etc. As we didn't pay for these upload buttons, it takes an age to upload housepoints / detentions.
In short: Lots of clicks to do very simple things.
They're still quite new to the MIS market and are constantly improving their product, but to be honest anything that creates so much extra workload for staff probably isn't worth it yet. The way the data is downloaded is not particularly useful either.
I'm not sure how great the in-built analytics are, we download the excel sheets and do our own data analysis.
Hope that helps.