This is a much better IM compared to Ping! or even Whatsapp with lot’s of goodies such as group chat, free photo sending, push notification, email as identification instead of coded ID, no need to login and is extremely fast!
Pros

1. Free iPhone to iPhone SMS style texting
2. Group chats
3. PHOTO messaging
4. Read receipts.!
5. Push Notification

Cons

1. Frequent crashing after exiting group chat
2. Plus button & Green Button overlay covers the message slightly
3. User Interface not theme-able yet