I've seen all of the match-3 match-4 and the slide the pieces to make the picture I care to see. I was looking for some more unique logic puzzles for comparison?
I just came across mysticglyph on the app store. It has me totally hooked! My brother and I are in a contest to finish first. The first 30 or so levels are fairly easy, but it has gotten progressively more difficult. It appears to have an underlying puzzle that I am trying to figure out. The tiles have letters - words appear that I think are a message of some sort.
Lots of good stuff on the forum- thanks.
Save Toshi is the best one I've seen so far. The premise is amusing and unique - puzzles are easy at first and become more challenging. This is the one puzzle app I have really enjoyed.
Try searching fresh released Action Puzzle game for iOS called "Tweens". If want to play on iPad, try "Tweens HD". Just search "Tweens game" on Youtube to see what is it all about.