Yeah, I'm definitely intrigued. But. This seems like something that really needs a free demo. I feel like I'm constantly checking out productivity tools like this and I really need to feel whether they actually fit into my workflow before I pay money. Or else it'd simply be too expensive to pay for each one just to try 'em out.
A related thought:
Having a free demo version might actually let you charge more for the full app. If I try something out and it really does save me even just a very small amount of time or headache each day, I'll pay $100 for it. Or more. Making my work life just a little bit easier is worth a substantial amount of money to me. You would be providing a valuable service and I'd pay you well for it.