The TomTom navigation app for iPhone gets an update to version 1.6 this week and gains a crowdsourced map correction tool that's been available on TomTom's line of standalone GPS devices for some time now.
Map Share, as the service is called, is a free, user-generated maps correction engine that lets you make small edits to your locally stored maps with the touch of a few buttons from within the TomTom app. Possible changes include edits to street names or posted speed limits, changing the direction of traffic on, for example, a one-way street, modifying turn restrictions at an intersection, adding or editing missing or incorrect points of interest, and simply blocking or unblocking a street or bridge that has been closed or recently reopened.
These changes are uploaded to TomTom's servers, merged with the Map Share data of other TomTom app and GPS device users, vetted by TomTom's algorithms, and redistributed to TomTom's user base, free of charge. Of course, these user tweaks and changes aren't meant to replace a full quarterly map update; rather, Map Share serves as a supplement.
Current users of the TomTom app can grab the free update in the iTunes App Store. New users can expect to pay $39.99 for the app with U.S. maps or $49.00 for a version that adds either Canadian or Mexican maps to the mix.