Best free iOS engine - Stockfish 5

I've installed Hiarcs, Shredder, t-Chess and many more on my iPhone and iPad, but none come close to the Stockfish and Smal-fish app. Both have upgraded to the Stockfish 5 engine. The engine streamrolled Houdini recently in the TCEC world computer chess champsionship. SF 5 is now the world's strongest. Check them out, https://itunes.apple.com/us/app/smallfish-chess-for-iphone/id675049147?mt=8 and https://itunes.apple.com/us/app/stockfish-chess/id305558605?mt=8

http://www.computerchess.org.uk/ccrl/404/

SF 5 is ahead of Houdini. Why would anyone buy the weaker engine when the champion is free?

Droidfish has also been updated!

Ok. I played a game against SF 5 on my iPhone. It still failed to recognize opposite color bishop was a draw.

Anyone had a try?

SmallFish just upgraded to the new engine and so is the Stockfish app!!!!

One last try.