Rebtel offers cheap international calls and free calls among 50 countries and saves lot on your international phone calls and SMS. Rebtel gives you an local number for an international number which saves your cost of the international call. The advantage is you don't need internet to make international calls but you do need a local free minutes calling plan.
Rebtel android application works in very easy way, Just dial from your address book as usual and the Rebtel app will automatically take over and route the call through Rebtel using your local minutes. This application also allows you to send cheap SMS from your android phone but you need internet connection for that.
You can download the Rebtel apps from the android market.
This application is very easy to install and use. You don't need to create separate contact before calling as you were doing before.
If you have never used Rebtel for international calls, then Try your first free call with Rebtel.