Nice, but not so nice
It gives words that are invalid. That is a failure. So it is not using the same dictionary as Word for Friends. (Inversely Word for Friends accepts words that Word Lookup does not give.)
The facility to email the company does not work and the identity of the producer is unknown. Any entity with an internet presence should have an easy method of Internet communication with users. Failure to provide support can only lead to poor reviews.
Quarqy about
Word Lookup Pro, v4.1