Show HN: Need feedback on the design and copy

Can you guys please critique this home page design and content for an upcoming product. Please feel free to be honest. All kinds of comments are welcome. I am here to learn. There are some dummy images in the testimonial and mobile app section which are used for representation purpose only since we did not have access to actual screens.

Here is the link - https://www.dropbox.com/s/2acilcmgigxpdbf/New-FabMath.jpg?dl...