Try Lacuna for Free.No Credit Card Required.
Lacuna is designed to remove the nightmares of formatting your book. We invite you to try it out, and then decide if it's worth your investment.
Free download • Windows 10/11 • No account needed
Use Everything Free
Format your entire book with all features unlocked
No Credit Card
Download and use completely free, no payment info needed
Pay Only to Publish
$149 one-time when you’re ready to export your EPUB
How Everything Works
Unlike web-based tools, Lacuna runs entirely on your computer. This means better performance and complete privacy for your manuscript.
Private & Secure
Runs locally on your PC. Your manuscript data never leaves your computer.
Your Files Stay With You
All your work stays on your PC, with no cloud sync between you and your manuscript.
Superior Performance
Native Windows application runs faster and smoother than web-based alternatives.
Lifetime Updates
Get all future updates free forever, whether you've purchased a license or not.
Ready to Try Lacuna Risk-Free?
Download the full version and format your entire book. Only pay when you're satisfied with the results and ready to export your EPUB.