Best Spanish-English language app by a mile

Worth every penny. Look up a word and get not only definition but virtually every idiom and common phrase using that word. Get full conjugations of verbs in an easy to use format.
Easy to use. Fully accessible off-line, a very important feature when traveling to avoid roaming data charges.
Recent update seems to make it even easier to use, since dictionary and conjugator are integrated.
One of my most treasured apps

viaixtapa about Ultralingua Spanish-English, v2.3