[aprssig] PocketPacket?

[Bob Bruninga]

I hear there is a PocketPacket available for the Iphone.  Has anyone tried it? 

I think this has lots of potential for demonstrating the value of APRS in all manner of wireless devices such as was written in the Septermber QST and on the web page:
www.aprs.org/aprs-messaging.html

Being able to message any ham, anywhere, anytime, using any device knowing only a callsign.  This includes using any device to view APRS and gain immediately local information about the amateur radio activities around him.

Bob, WB4APR