In case you are not blessed with a cellphone contract that allows you to have unlimited and free SMS, or if you are on a pre-paid contract, the recently released Jaxtr SMS app can come to rescue.

Similar apps that allow you to send free SMS worldwide ( or Viber), normally require the recipient to have the same app installed on their device. Jaxtr SMS is a cross-platform free app that is capable of sending free SMS worldwide, even if the recipient doesn’t have the same app installed.

Jaxtr SMS is available for iOS, Android, BlackBerry, Symbian, Java and Nokia cellphones.
After downloading the app on your device, simply enter your details and phone number and after verifying your cellphone number you are good to go.

The free app works on tablets, goes directly into the SMS box like a normal message and uses your own cellphone number.

Great app, highly recommended.

JaxtrSMS is available from the iTunes App Store

(Via)