A growing number of smartphones (cellular phones with PDA features) on the market these days are powered by Microsoft's Windows Mobile operating system, which doesn't interface with the Mac out of the box. Mark/Space last week released The Missing Sync for Windows Mobile 3.0 to address that shortfall. Like the company's counterpart for Palm OS-based devices, The Missing Sync for Windows Mobile synchronizes data on the mobile phone with iCal and Address Book or other applications that take advantage of Apple's Sync Services technology built into Mac OS X.

The latest version enables synchronization of files, folders, Safari bookmarks, and notes; improves iPhoto album and iTunes playlist synchronization; imports photos and movies shot using handhelds with built-in cameras; and supports Address Book contact photos. This version also works in conjunction with Bare Bones Software's Yojimbo 1.3 to synchronize notes between Yojimbo and Windows Media devices.

The Missing Sync for Windows Mobile 3.0 requires Mac OS X 10.4.8 and costs $40 for a 28.9 MB download version, or $50 for the software on a CD. Upgrades from version 2.5 are free if purchased after 2006-10-01; otherwise the upgrade price is $20.