I was able to "redeem" the free standard edition... but I already own the ultimate edition. So, now I have both versions on my origin account. LOL. Oh well.
I don't think the game will force you to map. It'll just be annoying when you revisit a floor and do not known where everything is... I believe you can turn on an "auto-mapping" function; so at the very least, when you move around the map, it will fill in pathways for you.
The game is pretty much the same, but the controls/interface are different. I started with the ipad version and then got it on console. It has been a while since I played, but I paid 15$ for it. So, if you really liked it on console, don't think you should expect a huge difference in game play...
I think I've spent more on trading cards than games this sale... but no money out of pocket, just sell the summer cards and buy cheaper ones for crafting.