The card game Solitaire became more popular than what it already was thanks to Windows. But you can also play it on an iPhone, as proven by this FreeCell Solitaire.
All cards face up
As you already know, there's not much to it. You have 52 cards that you have to spread out between the four areas enabled for such purpose, starting off with kings and ending with aces. However, in this version you'll be able to see all the cards before you even start.
A classic that couldn't be missing from your iPhone.
It has great graphics and a simple and easy-to-use interface that will help you to focus on what really matters: playing. There are also two ways of moving cards, tapping and moving or dragging and dropping.