I don’t know if I’m the only person who feels this way, but the % correct up in the corner is a great motivator for me. If I dip below 95% I usually slow down and if I go into the 90-94% range I really try to think carefully before answering so I can raise it back up.
On the same sort of note, I’d love to see WaniKani count your correct streaks as well to see how long you can chain/combo correct answers.
It does! In the top right corner (at least on desktop), by the little trophy, it shows your correct streak and then in parenthesis it shows your record!