The application has some promise, but the 'AI' is not that great and highlights words in text (sometimes only parts of words!) that have no bearing on the actual theme. Add to this a slew of small and niggling bugs and text formatting errors, and I cannot rate this solution more than 3 tacos at this time.
However, I do like how easy it is to use. If the devs can tidy it up, it would be a great little app.