Originally Posted by DavidN
As time marches on, I am thinking iphone/ipad app with bluetooth USB dongle for the ESC may be the best for field setup. Viewing logging would need an ipad or laptop for the larger screen.
Apple has not released any API for external comm unless you have an apple chip in the external appliance so unless you Jailbreak your phone and Castle support this by writing an app for it, it wont happen.
(Same thing why there is no iPhone app for the VBar etc)