Vonage is now offering cheaper international phone calls from mobile phones. The app that can be downloaded on a Blackberry or IPhone uses Wi-Fi to make calls around the world. Mobile users save minutes and dollars. Vonage emphasizes that individuals can save up to 50 percent in making some international calls. You do not have to pay those ridiculous mobile international fees. The approval of the app comes as a bit of surprise because Apple has rejected Google for its app, Google Voice.