MarkSpace has released The Missing Sync for iPhone, software designed to help users of other devices migrate their data to the Apple handheld.

Missing Sync for iPhone ($39.95) adds features for iPhone users that need to capture useful data created on the iPhone, like SMS, notes and call logs.

As Windows users are also switching to the iPhone, Mark/Space is also working on a Windows version of iPhone the Missing Sync to be released in the coming months. This will make the transition for PC smartphone users as easy as if they had a Mac.

The software supports migration from most smartphones using Palm OS, Windows Mobile or from the BlackBerry. The Migration assistant is a step-by-step utility that makes getting contacts, calendars and phone camera photos from the old phone onto the iPhone easy.

The iPhone keeps only 1000 SMS messages, both incoming and outgoing, which means at some point users will start to lose older information. But iPhone the Missing Sync collects that data so messages are safe. It also lets users view and search the SMS messages in a threaded view, just like on the iPhone.

Missing Sync for iPhone also syncs iPhone notes, so you can read them in Microsoft Entourage, Yojimbo from Bare Bones Software, or Mark/Space Notebook, which comes as part of the package.

The Missing Sync for iPhone will run on any Mac with Mac OS X v10.4.9 or newer, native USB support, and an internet connection. Data migration supports devices with native USB capability running Windows Mobile 2002/2003/5/6, Blackberry 4.0 or higher, Palm OS 4 or Palm OS 5.