free download???

I visited ZOHO Virtual Office homepage yesterday and clicked to download FREE version of Virtual Office. But in fact - the version I downloaded is evaluation and it will be expired in 30 days. Program didn't offer me any choice between evaluation and free as I expected. So... where is the catch? Did I miss something? Will my program really shutdown after 30days? It is only me using the VO so I don't need to pay any "contribution"?