Below is a recent press release for PolarView MX and Active Captain, not quite sure if this is what your looking for or not.
PolarView MX has been released for iPhone/iPads with full ActiveCaptain support. Many of you know PolarView for Windows, Macintosh, and Linux
(also with ActiveCaptain support). Now you can use their product on iOS too. The $3.99 product has a fantastic price
for the capabilities. It supports all US NOAA raster and vector charts. It quilts them together to provide a seamless display with course up rotation.
For more information and screenshots, visit: http://www.polarnavy.com/main/prod4