Very easy to use, intuitive, and accurate---most of the time. When translating from English to Spanish, any number entries are augmented for whatever reason and numbers mysteriously vanish. Also, the grammar used is very formal and will work in a pinch, but if you are attempting to communicate with a Spanish speaker that has not had formal grammar classes at at least the high school level.
These are by no means any kind of deal breaker, and considering this was free today, its an amazing app. I have not tried any other languages so these issues may not be across all languages. At $9.99 these issues would give me pause.
Sigeprichie about Easy Translation!, v1.3