This is simply a small console program that will prompt you a specified number of times to type a sentence correctly. It judges your speed, taking (words / time), and your accuracy, feeding the prompt and your input into the Demerau-Levenstein algorithm. This finds the minimum number of changes to make to change the one into the other.
Your results are then factored in alongside the calculated difficulty of the prompt to give a score.
These results are then totaled at the end and averages are computed.