First Book AI vs JustI18n

Comparing the features of First Book AI to JustI18n

Feature
First Book AI
JustI18n

Capability Features

AI Book Agent
Book Credits Additive
Book Structure
8 chapters, 24–32 sections
Content Ownership
Download
Drag and Drop Upload
Edit Content
Full-Length Book Generation
Guided Book Creation
Length Compatibility Check
No Training on User Data
Priority Support Team
Publish on Amazon KDP
Quick Access
Regenerate by Item
Roadmap Features
Additional languagesIn-text references & citationsReal-time collaborationAdvanced analytics
Run Locally
Sample File Provided
Section Editing
Setup Call Included
Step-by-step Guidance
Step-by-Step Questionnaire
Support Response Time Team
Within one business day
Team Use
Unlimited Language Support
Unlimited

Integration Features

Chrome Extension
Chrome Extension Messages Support
EPUB/MOBI Workflow
Export Format
Microsoft Word (.docx)Google DocsPDF (print-ready)
Export to DOCX
Export to PDF
Google Docs Export
Java Properties Support
Java Properties Supported
JSON File Support

Limitation Features

Current Languages
English only (as of now)
Manuscript Length Target
≈30k–35k words
No API Access
No Built-in OpenAI API Key
No Plugin Support
Plagiarism Responsibility
User responsibility
Requires OpenAI API Key
Unlicensed Mode

Other Features

Beta Version

Pricing Features

1 Book Plan
$19 one-time
10 Books Plan
$129 one-time
3 Books Plan
$47 one-time
30-Day Money Back Guarantee
50 Books Plan
$449 one-time
Book Credit Bundles
1 Book – $193 Books – $4710 Books – $12950 Books – $449
No Monthly Fees
No Subscription
One Time Payment
Premium Features
Refund Policy Duration
14-day money-back guarantee