First Book ai Reviews

4.2

4.23 stars
4.23 stars
56

Taco ratings

36
10
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5
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AskSumo

'Customers are all about First Book ai, praising its ability to quickly generate book outlines, its user-friendly interface, and its helpful prompts for organizing thoughts and ideas. There are a few hiccups like slow page loads and issues with completing sections, as well as minor issues with repetitive insertion of personal anecdotes. Weighing the raves against the occasional grumbles, First Book ai is hitting the mark and is a solid buy for those in need of an AI ghostwriter to write a book manuscript in less than 24 hours. Plus, with an overall rating of 4.2 and a 60-day money-back guarantee, it's worth giving First Book ai a try.'

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Showing 1 - 5 of 56 reviews
60f2d74a7ced4810ba7e92445ccad706

Verified purchaser

Deals bought: 19Member since: Feb 2012
5 stars
5 stars
Mar 31, 2026

It really does work

It worked as advertised. I was able to get a book in an afternoon (would have been faster if I didn't keep leaving while it worked). What I really liked was it provided ideas I never thought of and added context to the main points.

Founder Team
Casper_FirstBook.ai

Casper_FirstBook.ai

Mar 31, 2026

Thank you for the kind review and welcome to the community!

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jan965
jan965PLUS

Verified purchaser

Deals bought: 7Member since: Jul 2025
5 stars
5 stars
Mar 30, 2026

I love it

I love this product it writes like a dream, the books he writes is like a dream so good!

Founder Team
Casper_FirstBook.ai

Casper_FirstBook.ai

Mar 30, 2026

Thank you so much for sharing your thoughts. We're glad you like it!

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gemz
gemzPLUS

Verified purchaser

Deals bought: 21Member since: Jul 2021
5 stars
5 stars
Mar 28, 2026

Literally bought First Book AI and 2 days later published my book I'd been writing for 20 years

I have been writing my book for the last 20 years and it's basically a blue print for men and women navigating domestic abuse economic legal and emotional. And it gives a clear step by step blue print to enable the victim to take off the victim hoodie and stand in their power and do what's needed to move forward. This helped me polish it all up and I was able to move forward quickly. It just went available today and someone has already bought a copy. Time will tell now but thank you Casper 😊 and iv joined the skool group too. Just waiting to be accepted

Founder Team
Casper_FirstBook.ai

Casper_FirstBook.ai

Mar 29, 2026

Thank you for sharing this. That’s a big milestone.

20 years of work turned into a finished, published book in a few days is exactly the kind of outcome we want to enable.

Glad to hear it helped you bring everything together and move forward. And great to have you in the Skool community as well - you're in now :)

Wishing you a strong launch. Let us know if we can help in any way!

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115801121765824909848

Verified purchaser

Deals bought: 15Member since: Jun 2025
5 stars
5 stars
Mar 28, 2026

Best AI book writer I've used to date

I used First Book AI just as a test, honestly, as I've actually just finished my first draft of my actual book. That one required analysis and setting of themes from actual transcripts of interviews so with that I had to use multiple AIs actually. The final one was predominantly done with Perplexity but I wanted to test out First Book AI just to see what sort of draft you could put together on the same topic without all those detailed transcriptions. Honestly it was pretty good.

Overall I think it's a great tool to use for your first draft and then to do your own editing and adding your own personality from that really good product, a lot better than the other AI book writing software that I've tried in the past, which was fairly useless actually.

Founder Team
Casper_FirstBook.ai

Casper_FirstBook.ai

Mar 28, 2026

Thank you for taking the time to share this. Really appreciate the comparison as well.

Glad to hear it gave you a solid draft to work from. That’s exactly where we aim to be useful.

And you’re spot on. The best results come when you build on top of the draft with your own edits and voice.

We’ve also built a Skool community to help with the next steps. Finalising, refining, and getting the book...

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bryongrove

Verified purchaser

Deals bought: 2Member since: Jan 2026
3 stars
3 stars
Mar 27, 2026

Non-fiction only

I’m sure this product is great at what it does, but unfortunately it’s for non-fiction books only. I had no idea as the product description doesn’t really make that clear — what I wanted to use it for falls somewhere in between fiction and non-fiction so this is no help for me.

Founder Team
Casper_FirstBook.ai

Casper_FirstBook.ai

Mar 28, 2026

Thanks for the honest feedback, we appreciate you taking the time.

You’re right that First Book ai is focused on non-fiction today. That’s been a deliberate choice so we could go deep on one use case and actually build something that produces strong, structured books people can finish.

That focus has allowed us to help thousands of users create non-fiction manuscripts, and we’ve now also built a...

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