Mac sync software developer Mark/Space has announced the release of The Missing Sync for Symbian. Designed to sync Mac apps to Symbian S60 and UIQ smartphones, the new $39.95 product (electronic download) has a unique feature -- Proximity Syncing. When your Mac and Symbian phone are within Bluetooth range (about 30 feet / 10 meters), they automatically sync to insure that both are up-to-date.