Verified purchaser
The best book creation tool I have tested so far
I have tested quite a few AI book tools over the past months, and this one is clearly the best of them.
What I like most is that it is not just a text generator. You get a complete workflow - from the initial idea, characters and outline all the way to chapters, metadata and the cover. At the end you export files that are ready for Amazon KDP and KDP Print, in the correct formats and with the right dimensions. That takes a lot of fiddling out of the process.
The other thing I really appreciate: you decide how much AI you actually want to use. You can let the tool write the whole book, or you import your own draft and only use AI where you need it. That freedom is rare in this category.
The new OpenRouter integration is a great addition as well - being able to bring your own models makes a real difference.
What could be better: I publish in German, and the research tools (competitor analysis, niche finder and so on) sometimes mix German and English in their output. Nothing is broken, but it shows that the tool is not fully optimised for the German market yet. I would love to see that get some attention.
Still an easy 5 out of 5 from me.
Mykyta_Founder_AIWriteBook
Aug 21, 2026Thank you, Robert. Your German point turned out to be a real bug, not a missing optimization: the research tools were not receiving the book language at all and quietly fell back to English, which is exactly the mixed output you saw. We found it because of this review and a fix is on the way. The rest of the workflow already writes fully in German, so once the research tools match it, the German path should feel native end to end.