Hound
Developer: SoundHound, Inc.
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Hound is a voice-activated digital assistant. Its goal is to replace the “touch and tap” interface on which most mobile users currently rely as well as besting the competition when it comes to ease of use, speed, wealth of information and accuracy.

Hound combines speech recognition and language understanding. You speak naturally with no need to learn special keyword phrases.  It understands both context and details. You can follow up to refine your results, or you can say precisely what you want all at once.

The app’s strengths include navigation, local search, and weather tracking, but it can help you find just about anything.