I really wanted this to be a great tool but I've had it for a while, some improvements were made but the intentions were better than the tool improvements.
I find myself pushing to use it, but honestly, GPT4o and Claude 3.5, get me farther along than this.
I was hoping there was some secret prompting sauce in the background that made the content generation better, but it doesn't.
While they promote this as "Turn Your Ideas Into Books Instantly", it barely does a first draft well and you will need to BOTH edit and use another AI to produce a reasonable final product.
Sad but honest opinion- put your money elsewhere.