Great little game
I got the free version and played through all the levels, and havent once regretted getting the paid version. Theyre constantly adding new levels (not that Im close to solving them all), and its just a really good, smooth-working little app. Ive never had a glitch with it, and its a nice way to use up a minute or two solving a puzzle -- plus it saves your progress if you get interrupted.
swtalmnd about
TanZen - Relaxing tangram puzzles, v1.8