I kind of hate the scrolljacking. It's too flashy. It's sluggish. It is kind of distracting. I think the small gif of the kanban is much more effective, and the rest of the copy is too.
Maybe a bit of top padding on the 'CenterCallout' where you say "Writing is just one click away" and "A new way to note".
You might want to sprinkle one or two more calls to action for purchase or trial in between some of the feature descriptions.
Otherwise, the kanban setup for chapters and such seems really intuitive and I'm surprised I haven't seen that before in this context. I'd definitely be interested in giving it a shot. Maybe paying the $8 will encourage me to write more. I'll bookmark it to check out after work!
Your suggestions for the copy and additional CTAs sound like a perfect A/B test to run, which I'll get on ASAP. Still trying to figure out all of this marketing stuff, and all suggestions are _very_ welcome.
It's still a young product, so we have a long way to go, and we're still learning. Thank you for taking the time to look at it! Can't wait to hear what you think of the actual product.