The application, which works on both cellular and Wi-Fi network connections, not only allows users to take advantage of low rates for international calling, but also uses VoIP capability when on a Wi-Fi network to avoid using your phone plan’s minutes.
Unfortunately, if you’re already a Vonage customer, the new applications don’t give you anything in the way of tie-in with your existing service. You’ll need to set up a new account which allows you to pay as you go—Vonage even throws in a $1 credit to get you started. And, because no iPhone app is complete without it, Vonage offers built-in Twitter functionality for both reading and posting.
The company is offering two apps:—Vonage for iPhone and Vonage for iPod touch—both of which are free and require iPhone OS 3.0 or later. There’s also a version for BlackBerry, if that’s what you’re packing in your holster.