It's not uncommon for publishers to start nailing dollar signs on freeware products or release a pro version requiring some financial obligation. It's a little more rare, and always refreshing, to see publishers introduce a free version of a commercial product. PK Ware did it with SecureZIP back in April, and MobiMate is doing it now with WorldMate S60, all-in-one travel software that incorporates a world clock, global currency converter, weather forecaster, and time zone map that tracks night and day around the globe.
The limited-feature release offers users free reign over five WorldMate capabilities, but dangles flight schedule and flight status lookup, and satellite imagery as bait to upgrade for $50. That's a hard lump sum to swallow when mobile browsing and Google services can deliver the same free of charge. WorldMate's free version, however, offers a convenient toolkit that's useful for travelers, especially frequent time zone trippers.
For other ways to enhance your Symbian phone's performance and productivity, see my article with CNET cell phone editor Bonnie Cha on how to make your Symbian smart phone smarter.