This script is inspired by Wanikani Improve, which features the exact same display. Not sure if that script is still working or not, but I wanted something that is maintained and works with undo scripts. I think it also works well as a standalone script.
What does it do?
It tracks your answers and keeps a streak count going for how many times you have answered correctly in a row. It also keeps track of your record.
The 4 in this image is the current streak, (12) is the record.