Send Free Messages to Other iPad and iPhone Owners With Ping!

Don't want to reach for your phone to send a quick message to your iPhone, iPod Touch, or iPad having pals? Use Ping!, a free messaging app which vaguely reminds me of the BlackBerry Messenger setup. Here's how it works:

There's an SMS function which works only with phones, but otherwise messages are simply pushed through on the iPad and iPod Touches. The only catch is that both you and your buddies need to have the app. Ping! is free $2.99 and available through iTunes now. [iTunes]