Ping!, the iPhone-to-iPhone messaging app, has just been updated to version 1.0.1, and with the update comes a bunch of bug fixes. Here’s a little of what’s changed:

• You can now unregister your Ping! ID
• Landscape keyboard fixed so you can now send updates from that view
• Duplicate messages will no longer be received
• Notification settings icon fixed
• There’s now an in-app invitation email

Ping! certainly isn’t the prettiest app in the world, but it is definitely functional, and allows free iPhone-to-iPhone messaging without having to use SMS, and it’s way faster. You can pick up Ping! for $0.99.