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GPS Apps links
Alternative GPS choices
Stand-alone auto GPS devices are still the best choices for car navigation, experts say. They cost more than a cell phone GPS app (about $100 to $300), but they're also more accurate and easier to use. See our separate report on Auto GPS.
Handheld GPS units are best for outdoor navigation. They're lightweight and more rugged than a cell phone, with maps tailored toward hiking and other off-road pursuits.
GPS apps are designed to run on smartphones and some cell phones. Our cell phones section covers the best phones across all categories.
AAA Mobile Navigator to be discontinued
AAA Mobile Navigator gets high marks from some sources, including About.com, but it is scheduled to be discontinued on March 31, 2010. Sprint, Alltel, Verizon and AT&T have already dropped the service, although it was still available on T-Mobile as of this update.
Best research
Cell-phone GPS or Stand-alone GPS? ConsumerReports.org, CNET and PCMag.com's Smart Device Central all offer step-by-step guides to help you decide.
On-board maps or on-demand maps? Some GPS apps carry all of their maps on board, so you can still navigate without a cell signal. Others download maps on the fly, which takes up less memory on your phone. GPSReview.net outlines the pros and cons of each type.
GPS blogs tend to do the best job keeping up with fast-moving GPS app technology. Bloggers at About.com and ConsumerReports.org also test GPS apps and recommend the best ones. (Note: ConsumerSearch is owned by About.com, but the two don't share an editorial affiliation.)
Manufacturer websites
Check here for the latest information on features, and to find out whether your phone is compatible with a particular GPS app: