Typr is currently live and hosted on Heroku -- access it by going to https://react-typr.netlify.app/.
This app was created by @kurtdeleon as a hobby project so he could practice making stuff with React hooks. The site is directly inspired by the typing practice format of 10FastFingers.com.
The formulas used to compute words-per-minute (WPM) and accuracy were taken from the equations listed on SpeedTypingOnline.com. As for the statistics regarding WPM speed, Juerd Waalboer's Typing Test @ AOEU proved useful since they have their histogram displayed for public use.
Bootstrapped with Create React App.