I like that it allows you not just develop but debug as well which makes development faster than other platforms out there allowing more time with customers/ users during testing phases before final releases are deployed! The interface needs some work in terms of ease at first glance so this could be improved upon if needed - we have yet seen improvements regarding mobile version though since its quite easy using their tools from desktop versions once they're ready too use them together.
We've started developing our own app studio however its still only under construction now therefore nothing much has been done thus far except basic functions such us editing templates etc but will get into coding soon when completed.