Don't get us wrong, it's the thought that counts. Nevertheless, being proposed to with a ring that's also pleasing to the eye makes the magical moment even sweeter. While your beau may know you inside and out, let's face it, when it comes to jewelry, some men just have no clue. That's where Tiffany & Co.'s new iPhone app comes in. The Engagement Ring Finder allows users to create a ring by browsing a wide selection of shapes, setting, metals and styles. You can choose from six carat sizes up to 2.5 carats on this app and the rings are displayed true-to-size. There's even a Ring Sizer that can also determine your size by placing a ring on the screen for measurement. Share your picks with friends, family and even your future groom for their thoughts via Facebook and Twitter. Even if a wedding isn't in the cards for the near future, it's never too early to start designing your dream ring.