Testing Navigation Applications for the iPhone
iNavx, Memory-Map, and Navionics offer useful features for a small price.
After testing navigation applications for Windows-based smartphones and PDAs, Practical Sailor focuses on three apps available for the iPhone. iNavx, Memory-Map, and Navionics can each be downloaded for a reasonable price and used as backup to primary navigational aids such as a chartplotter or handheld GPS. Cellphone-based programs are not recommended as a standalone approach to navigation, but the iPhone apps are a great way to investigate, plan routes, and set and send waypoints at a very low cost for cartography.