I think this should also do a phoneme based comparison, for example the photo sharing website Flickr is pronounced like this word (as a slang word it is well known) https://en.wiktionary.org/wiki/flikker
Very, very useful, although specific to American English.
https://en.wikipedia.org/wiki/CMU_Pronouncing_Dictionary
I've succeeding in using it to solve puzzles that had to do with how words were pronounced, as opposed to how they were spelled.