Damaka's Xavy, a Full-Featured Native Mobile Client for Lync, is currently available for FREE on iOS and Android.
Damaka's Microsoft Certified Xavy app is normally $19.99 for iOS and Android, but is currently being offered for FREE.
Xavy is a native mobile client for Lync and OCS R2 that provides the full feature set of Lync (white-boarding, application sharing, desktop sharing, file sharing, A/V conferencing, and IM). If you can access Lync without a VPN connection, you can just download it, punch in your credentials and sign on. Xavy Attendee and Xavy Cloud (Office 365) are currently FREE as well.
How-To Videos: https://www.youtube.com/watch?v=qsUzHuLUsnw&list=PLXkRs6rapUYuxsBrrQMJD41rFpWdSh-aQlist=PLXkRs6rapUYuxsBrrQMJD41rFpWdSh-aQ
I didn't see any deadline about this offer, therefore, it should be taken immediately!