Synium Software is a software developer based in Germany that publishes two separate but related genealogy products: MacFamilyTree for the Mac desktop and MobileFamilyTree for the iOS platform (iPhone and iPad). Both of their family tree products (along with all of their other software titles) are currently on sale for 50% off through December 27 through their website, syniumsoftware.com.
I have been using MacFamilyTree since it was first released. From its humble beginnings in 1998 when the iMac was still in its infancy, MacFamilyTree has blossomed into a full-featured tool that provides an endless array of ways to manage and view your family tree content. When the iOS version came out, those of us who had been using MacFamilyTree were given the terrifically useful gift of family tree mobility, since much genealogical data gathering is, by necessity, done on the fly.
This summer, I attended a family reunion in Ohio and I was able to capture in a very short time an enormous amount of information from relatives I haven't seen in years, all while enjoying the reunion cookout and conversation. MobileFamilyTree allowed me to enter this info directly into the family tree database and make interrelated connections that might have been lost if I had tried to scratch this out on pieces of paper.
While you can use either version independently (meaning you don't necessarily have to buy both versions to have a fully functioning family tree manager), if you own both a Mac and an iPad or iPhone, I would highly recommend you invest in both, to make sure you have both full syncing via the cloud, as well as the ability to publish directly from the desktop a website viewable from any browser.
If you haven't yet jumped into the "genealogy pool", making a family tree can be a real gift to the next generation. Your kids and grandkids will thank you and you'll have a great time doing it. Think of it as an ever-unfolding detective story.