MALstats can now access user rewatch and episode history data, provided the user gives their MAL password. Note while the passwords are encrypted, in the event of a complete server takeover, they may possibly be compromised, so if you're worried, make sure your MAL password is completely different from all your other passwords.
With rewatch data, MALstat's days stat will now be nearly if not identical to MAL's.
With episode history, you can now see an individual timeline for a given show, provided you updated it as you watched it. Simply click on the row to see. Shows that only consist of one episode or were seen completely in one day do not need a graph.
Some examples from my list