The learning stats feature in Pro has a lot of irrelevant data, such as what time of the day you learn best. I assume 4am is the worst time, duh.
Anyway, if stats I would rather have:
Average time per day, What’s the error percent per course, total time per course, number of words learned per day, simple stuff like that which should be easy to yank out with an SQL query.
…imagine that done for hundreds/thousands of users in a minute… 60 bucks a year don’t match by far the capacities needed for such queries (and for the rest of the plate)