Classic memory concentration picture game

I intended for this game to be the first thing I made for the iPhone. I used to love playing Memory (or Concentration, don't really remember) when I was a kid. You could play alone and challenge yourself to find all the pairs faster. I'm sure it's what I did when I couldn't find Marc and Jason or Brett. The version I made, Memmy, has several picture themes to choose from, including Dogs, Mountains, and Abstract images. The scoring system weights fast pairings, overall game time, and board difficulty.