The most useful feature of the app, compared to other translators, is that the data is downloaded into your device so you can use it without an internet connection. E.g. I keep data turned off on my iPhone because Im on a prepay plan here in Costa Rica and I dont want to burn my minutes by keeping background apps running while the phone is in my pocket. But I often need to find a Spanish translation for words like turmeric or curtain rod when out shopping. Having the translation data stored in the phone makes this information available wherever I want it.
Derryl Hermanutz about Languages, v1.1