Voice is an app that collects voice commands that are used in daily life and that could be of interest to people who have voice problems or don't know how to speak English (or Portuguese).
Voice organizes audio clips into categories: transportation, food, finances... Particularly useful, for instance, is the time category, where the recording asks what time it is. So if you're in a country where you don't speak the language very well (in this case English or Portuguese) and you want to ask what time it is, take out your phone (okay, don't look at the time) and let it ask for you.
Voice could also serve to help you learn. Not only does it play all sorts of voice commands, it also lets you hear what certain foods are called – coffee or sugar, for instance – or the names of different types of transportation, medical terms, financial institutions... In any case, this app is in general super helpful if you can't speak the language and have to communicate, or just want to learn the basics of a new language.
If you want to let your phone talk for you, try Voice and see firsthand how useful it can be..