It's been a little while since the last update, but version 2.1 of Molecules just went live on the App Store. 2.1 adds full support for the new Retina iPad, and has an enhanced rendering engine to support the detail on that newer device. I've also improved the contrast slightly on newer devices.
For iPad users, I've also added an atomic color key, which I know has been a highly requested feature. I've yet to rework the iPhone / iPod touch interface to support this, so this is not present on those devices.
