Melodis Voice Dialer, from Melodis, works well enough, but unfortunately, it's not enough. The app store features quite a few voice dialers, and this one does not stand out in any way. The free vlingo, for example, dials by contact name and will also search Google and Yahoo, among other functions.
Melodis' voice recognition is accurate, although for best accuracy you should say the first and last name of the person you wish to call. If you want the phone to auto dial, you must say "Call" first.
You can vocally bring up people in your contact lists by name, by the kind of phone you wish to dial (mobile, home or office), by email, company name and other identifiers. Melodis says the reason its searches are so fast and accurate is that your contact information is indexed by its servers. That could be troubling to some people.
You can set sound effects for button taps and set the phone to vibrate when it's ready. You can also set an auto dial delay of 0 to 6 seconds, plenty of time to stop the call from going out if you make a mistake or change your mind.
The interface is streamlined and Melodis Voice Dialer works as advertised. The issue is that it doesn't bring anything new to the playing field.