Web app challenge... accepted

I've published several mobile apps in the past, however this is the first Saas web app I'm making. It's actually a response to Nathan Barry's post a few days ago.

I programmed the code for myself and my own Android buyers. It's been really helpful to get feedback from users, and start a dialogue with them, so I'm working on making it more user friendly for others to use.

Please let me know what you think about the idea itself, the landing page, the copy, anything I must know before launching a Saas app, etc. Your feedback is appreciated!