Unfortunately, as cool as it is, I don't think it really changes much. I took a quick scan of your website, determined it was expensive screen-dimming software. Others are likely to do the same.
I have no doubt that this took an extraordinary amount of time to get right. You also did a beautiful job with the app and the website. I've tried to put something together that's a fraction of the complexity, and, well--it's just a lot of work. You should be proud of what you built.
That being said, all of what I said still stands: even though it allows you to control the hardware through software, it's still an expensive piece of software, and it's sort of niche. Having to rebuy the software every year for updates is also sort of a piss-off, even though I know you're doing lots of testing for each OS update and possibly hardware revisions too.