Swaggle is a simple, free, group text messaging (SMS) service for iPhone. Send one text message to Swaggle, and it will send it to everyone in your group. When someone responds, that goes to everyone in the group, as well. Use it to coordinate your evenings on the go, call out for help or just chat.
Note: This app requires registration and the iPhone version requires an iPhone.
You must be using an iPhone to see the iPhone version of this app. Try it here