To be more precise it allows you to add a voice command to Google Now,
so you're able to send WhatsApp™ messages by using voice recognition in addition to e-mails and sms which are already offered to send by Google Now.
You see this app isn't a standalone voice command app,
but you could see it as a WhatsApp™ tool which improves another app.
Also the app offers the possibility to define the syntax of the voice commands.
By offering this oppurtunity the app should be useable in nearly every language.
Furthermore you can assign aliases to contacts to use more personal voice commands.
(Whatsapp™ and Seebye Messenger API need to be installed on your device.)
WhatsApp™ is a registered Trademark of WhatsApp Inc.
This app is NOT made by WhatsApp Inc.
Iussum for Google Now
This app has access to :