And now I'm not confident about them. Check them out here1 a few very positive reviews that seem very "professionally written" and some lukewarm reviews that sound a little more genuine.
Some lukewarm reviews of the newer version too2.
UPDATE: It was terrible and I sent it back.
Paul Clarke's blog - I live in Hythe in the deep South. Married + dad to 2, I am a full stack web engineer, + I do js / Node, some ruby, other languages etc. I like pubs, parkrun, eating, home automation and other diy jiggery-pokery, history, genealogy, Television, squirrels, pirates, lego, and TIME TRAVEL.