This week, we’re briefly looking at two apps that draw inspiration from the natural and traditional man-made beauty of Japan: iZen Garden 2, sequel to one of the top 100 apps we’ve reviewed for the iPhone and iPod touch, and Yoritsuki, an alternative that similarly seeks to relax the user with customizable, classical artwork and gentle sounds. Of the two titles, iZen Garden 2 is the stronger pick, though it comes with caveats; read on…