yes indeed. Most of the puzzles across Normal, Advanced & Master levels are from 2011 GM tournaments.
More than 600 puzzles from July, August 2012 tournaments are available as In-app purchase.

 ha ha ha :-)
My blogpost on why the name iChess http://mychessapps.blogspot.in/2011/09/why-name-ichess.html

Have lots of chess material in pdf or djvu format? Now you can put it to good use and "study" it on your phone/tablet.

Chess Book Study is a fusion of two Android apps in a single screen. Open your ebook in one screen and make moves on the board on the second screen! It is also the first Chess app which listens to what you speak and makes the move on the board!




https://play.google.com/store/apps/details?id=com.pereira.booknboard

Do you want to improve your chess? Then you must solve lots of tactical puzzles.
iChess was developed exactly for this reason



☆ Analyze with the power of two Chess engines!
☆ 3 Levels (Normal, Advanced & Master)
☆ More than 1250 puzzles, all offline!
☆ Load your own puzzles file in PGN format
...and 10 more features!

https://play.google.com/store/apps/details?id=com.pereira.ichess