As a relative novice with computational chemistry and a bench chemist by nature, I was so happy to find LUMO since I didn't want to spend all of my time in front of the computer. It is SO easy to use, I almost can't believe it. Beautiful molecular orbitals are generated in a matter of seconds and then you can paste high resolution pictures into your document or presentation in just a few more seconds. Honestly, LUMO stands at the intersection of elegance and utility, truely deserving of a Mac platform. Matt Kieber-Emmons was really helpful with a few snares I found in my calculations along the way. It is the best $25 I ever spent and considering this is just version 1.1, I can't wait to see what will be in future versions. THANKS A MILLION!