Wow
Super easy to use and kind of wild how much it can do from one prompt. I gave it a pretty big project and it just went to work.
Free
In-App Purchases
About
This app helps you write a researched book on your iPhone. It generates chapter outlines, writes prose, and includes illustrations based on your topic. Your first book is free, with subsequent books available via in-app purchases.
✓AI-generated book outlines
✓Automated prose writing
✓Integrated illustrations
✓In-app book library
✓Table of contents navigation
✓Zoomable illustrations
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What's New in Knowledge Observatory
1.0.1
September 20, 2026
Audio book generation now shows as a pending task before the book is considered finalized. When the screen profile does not have enough room for the header, the chapter image header will auto-pan.
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Subscriptions & In-App Purchases
$14.99
1 book
Write one more research book
User reviews
FAQ
How does Knowledge Observatory help me write a book?
Knowledge Observatory uses AI to generate a book outline, write the prose for each chapter, and add relevant illustrations based on a topic you provide. You can then access and manage your created books within the app's library.
Is Knowledge Observatory free to use?
Yes, the app is free to download and use. Your first book is provided for free. Subsequent books can be created by purchasing credits through in-app purchases.
What are the in-app purchase options for Knowledge Observatory?
Credits for creating additional books can be purchased as a consumable in-app purchase. You can buy credits for 1, 3, or 10 books at a time.
Can I read my books offline with Knowledge Observatory?
Yes, books created with Knowledge Observatory are saved in your library, allowing you to read them and access their content, including illustrations, at any time.
What devices is Knowledge Observatory compatible with?
Knowledge Observatory is available for iPhone and iPad. It is designed to run on these iOS devices.
How often is Knowledge Observatory updated?
The app was last updated on September 20, 2026, with version 1.0.1. This indicates recent development and ongoing support from the developer.
What is the age rating for Knowledge Observatory?
Knowledge Observatory has an age rating of 4+, making it suitable for a wide range of users. This rating suggests it contains no mature content.
Does Knowledge Observatory have ads?
No, Knowledge Observatory does not contain advertisements. The app's monetization relies solely on in-app purchases for additional book credits.
