Microsoft is making available mobile client versions of its Lync unified-communications client for a number of platforms this week.

First up is the new Windows Phone 8 version of Lync 2013 Mobile. This app is available in the Windows Phone Store as of March 11.

Later this week, according to company officials, the iPhone and iPad versions of Lync 2013 should be available, as well. Microsoft officials said these apps have been submitted for approval.

Update (March 12): The iPhone and iPad Lync 2013 apps are available in the iTunes store.

Lync is Microsoft's software for business instant-messaging, presence, VOIP and meetings.

In 2011, Microsoft made available to customers mobile versions of Lync 2010 for Windows Phone 7.x, iPhone and iPad. An Android version of Lync 2013 will be out within a month, so by April 2013, a spokesperson reiterated.

The ability to view PowerPoint when in meetings with Lync Mobile is a feature specifically for the iPad version of Lync, according to a March 11 post to the Lync Team blog.

Microsoft is working on integrating Lync and Skype , but is running later than planned with that work. The first phase of that integration should be available to customers by June 2013.

For those attempting to set up Lync for the first time, be warned: It's not child's play. Enterprise Applications Consulting's Josh Greenbaum says the user set-up experience still needs a lot of work. That said, Ars Technica's Peter Bright likes the feature set of Lync and says Lync 2013 is everything Skype should be.