Can you get a clear idea of what this app does from the landing page? (Beta)

Cool Logo and avatar. The intro is very good and I was able to understand the value prop quickly. However here are a few things you can improve.

1. You haven't really told how it is going to work. The "How it works" section is more like "What you can do with our app". Is it going to be a Mobile app or a Web App or both? Would it connect to Kindle or other reading apps or would I have to track my reading manually? Screenshots or Illustrations of how the app is going to be kindles curiosity, which will lead to more signups.

2. Aesthetically, I would improve the "How it works" area. The Icons are too huge and glaring. They are supposed to aid you with visual navigation and not distract you. Increase spacing between the two rows. Spacing between related elements should be compact and you should have more spacing. For example, the spacing between the icon and its associated title is actually more than the spacing between the two rows. Check this - https://prnt.sc/rnpbr9
   I would also recommend using a fixed grid for desktops & laptops (1160 or 1170px ), instead of a fluid grid. I use a 27inch iMac and the icon boxes are about 1600px wide and it doesn't look great.

3. In the intro, just beneath or above the "Sign me Up" button, I would recommend adding something like "Be the first to know when we launch". or "Get early access". That way we know we are looking at an upcoming product. This could go either way. So experiment and find out.

Good idea. As a big reader, I definitely see the value in this. Your main value prop (stay on top of reading) is super clear. Initially I thought it was a Goodreads tracker competitor. When I scrolled down I saw reading insights and spaced repition which peaked my interest more. You might want to consider leading with some of these features which aren't common in competitors