I use this app on a regular basis, and its terrific. It would be better if it could accept multiple-word entries (phrasal verbs, colloquial expressions, etc.--Id give it 4.5 stars rather than 5 on that basis if that were an option), but its reliable, quick, and well worth the investment. While there are online dictionaries available, this app works without wireless access, so it is very helpful in a variety of situations. It goes beyond the most basic definitions and provides examples of a variety of usages. I vehemently disagree with the suggestion that it should recognize conjugated verb forms as entries, since that simply is not how dictionaries work, irrespective of format. If you need to refer to a Spanish/English dictionary with any regularity, particularly in situations in which wireless access is unavailable or carrying a dictionary is unwieldy, this app is a very good resource.
Jens7 about Diccionario Inglés <> Español