[GPSNavX]

>> I downloaded the Maptech app (West coast US) for my iPhone last week <<

I am not aware of any iPhone application offered by Maptech. Do you mean Navionics, FlyToMap or possibly Navimatics? Maptech sells raster charts (that do work great with MacENC and GPSNavX).


>> The review in the app store was written by the developer of iNavX, and it - of course - both praised the Maptech product and offered (very constructive) criticism. <<

Also not familiar with this review as I have not written any such review. I did write a Customer Review of the Navimatics Marine Maps (WA, OR) iPhone app.