WPMTest is an application that can be used to benchmark and improve your typing skills by typing an endless amount of words. The base application comes with two modes to help you train:

1) Endless mode with no added pressure. Just practice and improve your skills!
2) Stopwatch mode which monitors your performance and provides WPM/accuracy stats.

A premium add-on is also purchasable which enables the in-game settings. A one time purchase will enable:

1) An increased base word count for extra variety.
2) Ability to change dictionary mode to predefined sentences.
3) Custom word and sentence dictionaries which can be used in place of the predefined lists.