Textfree

Sick of paying $1000+ per megabyte for SMS messaging on the iPhone. There are plenty of apps that will allow you to bypass AT&T and send and receive text messages for free. And some apps, like Textfree will use the iPhone’s notification feature to alert you of new texts even when you are not running the app. The full version allows unlimited text messages, while a free trial version limits you to 15 per day.