Expandable form fields?

I am on a Mac and have CS6 with Acrobat X. I was going to purchase LiveCycle Designer but apparently it is PC only. I don't have a lot of time to learn or purchase a new program right now but will if I have to. Does Acrobat X have the ability to create expandable form fields? I am blown away at how hard this info is to find. Any help would be greatly appreciated. I am fairly new at creating editable PDFs. I have been creating them in InDesign and exporting as interactive PDFs.  Thanks!!!