- Consider a contrasting color for some of the elements. You have a pretty monochromatic palette and it unintentionally reads as "plain".
- Chunking. I think you can cut down that home page a ton, and get to the point clearer. It will feel more "marketing fluff" but fight that urge. It's not to make it fluffy, it's to simplify the things to parse.
For example, if you remove:
"You're looking at a very simple but powerful tool that will help you:
Develop a daily writing habit.
Massively increase your writing output.
Master the art of writing in a fun and engaging way!
If that sounds interesting - read on to learn how it works."
and start with your second paragraph, It's so much stronger:
" Write every day, skyrocket your productivity
There are three ways to increase your writing productivity:
Write more consistently.
Write more words.
Write faster.
Let's see how this app will help you to improve each of these metrics.