To get to 2048 in Hard Mode is impossible.
But in the very, very unlikely case that you do, I have prepared cake for your resourcefulness in an atmosphere of extreme pessimism.
2n is a game that is quite suitable for several things. If you can make it to 2048, then the Hard Mode beckons you with derision. If you cannot but have plenty of friends who acts overconfident after they beat the game once, then give them the Hard Mode and observe in amusement how they go from "whats so hard about this" to "whats wrong with the creator??"
Did I mention there is also a multiplayer mode, where if you get tired from bringing tiles to higher values, you can instead stopping others from doing so?
Just for the fun of it, theres also leaderboards and achievements (e.g. get to 2048 in less than 10 minutes), and multiplayer mode rates with an Elo system.
"They made an app for that game, you know, that 2048 game."
This is not an app for "that game". This is something better.
***Note***
To invite a friend in multiplayer mode, you and your friend need to be both at the Find Match screen. Make sure your phone can receive notifications from Game Center (check notification center in phone settings).
Background music by Podington Bear. I really like it.