Vonage who provide VOIP calling features to mobiles have announced a new application for Android and iPhone mobiles.

At one time Vonage was a major competitor Skype, but have since been over-powered. However, they are still making products and this latest one seems quite promising.

The new application enables you to make free VOIP calls on your mobile by integrating with Facebook. If anyone on your friend list also has the application installed you can make free voice-calls using the application.

It's quite a nice idea and provides a more personal way to keep in touch with friends, or people you haven't spoken to in a long time.

The application supports both 3G and WiFi but you should be aware you may encounter data charges using the application.

The application is available to download from the Android Store and the App store right now.