11 Oct 2017:
I created a small CW training tool that consists of a few scripts and some html. The generated static website is responsive and the code itself is quite simple and adjustable to ones needs.
I use this site to accompany a CW learning course where I am participating. The training data is generated each day by a cronjob so you have some fresh texts to train on each day.
The code can be found on my github. It is released under GPL Version 3.0. If you are insterested in this, feel free to get in touch with me.
Have fun and vy 73, DH3IKO