Passfeed is a cross-platform mobile app which allows you to get feed and Real Time Messaging with contact friends. Now it's available on the iPhone and Android.
Multiplatform: Sync your Contacts on the iphone and andriod
Feeds: Get feeds from your friends, “See what feeds!”
Messages: Send text, voicemessage, images, Location for free
Contacts: Stay in touch with your friends only from contact!