Started 3 years ago (2015-09-05T19:00:00Z).
Ended 3 years ago (2015-10-30T19:00:00Z).
Go to http://tonedear.com/ and do any of the available exercises.
Today I turned off Fixed Root option, which noticeably decreased my success rate. I managed to answer correctly 78/100 questions. I noticed decrease in will to practice as it is work day. Also, I turned off the automatic question forwarding option, so I can repeat interval and remeber its correct name.