Slow Load Time for iOS App

Our Unity app Jinx (http://itunes.com/apps/JinxPsychicSidekickTheCuteMagicFateB) loads extremely slow, I'm wondering if this is normal or if there are any typical things we should check. It takes about 15 seconds on an iPhone 3Gs and 9 seconds on an iPad 2.

I did some searching here already and saw the asset bundles idea, but there are so few assets with this app that I'm not sure if that would help (there is a single 3D character, a 45 second song, a few SFX, a background image, and some gui objects).