Calcudoku Puzzle Generator for KDP
Generate printable Calcudoku and KenKen-style puzzle book interiors in minutes. Set the grid size, cage options, and layout, then export a print-ready PDF with full solution pages — ready to upload to Amazon KDP.
- Licensed for commercial use
- KDP-ready print PDF
- No royalties
Plans from $9/mo · cancel anytime
Custom cages
Choose cage sizes and arithmetic operations to set the challenge level.
Print-ready PDFs
Every export pairs puzzle pages with matching solution pages, sized for KDP.
Flexible layouts
Control grid size, puzzles per page, fonts, titles, and gutters to fit your book.
Why not use a free generator?
Free generators are fine for a worksheet or a rainy afternoon. A book you sell on Amazon KDP needs the right to sell it, and pages made for print.
Typical free generator
- Often for personal or classroom use only, so selling what you make can break the terms
- Downloads made for screens, not for print
- Not sized for KDP trim sizes and margins
Publish Aid
- Licensed for commercial use: sell on Amazon KDP or anywhere else
- No royalties or per-book fees
- Print-ready PDFs sized for Amazon KDP
How it works
- 1
Set how many puzzles you want and the grid size.
- 2
Choose cage sizes, operations, layout, and fonts to match your book.
- 3
Generate, preview, and download the print-ready PDF.
Ready to build your puzzle book?
Sign in to generate print-ready interiors and export them as a PDF in minutes.
Plans from $9/mo · cancel anytime
Frequently asked questions
Can I sell the Calcudoku books I create?
Yes. Commercial use is included: everything you generate and export is yours to publish and sell on Amazon KDP or any other platform, with no royalties or per-book fees.
Do the PDFs include the solutions?
Every export includes matching solution pages alongside the puzzle pages, so your book is complete.
Is this the same as KenKen?
Calcudoku is a KenKen-style arithmetic grid puzzle. You control the grid size and cage operations to tune how hard each puzzle plays.
Do I need an account to use the generator?
You can browse this page without an account, but generating and exporting puzzles requires signing in and credits.
Can I use designs from a free online generator in a book I sell?
Check its license first. Many free generators allow personal or classroom use only, so putting what they make into a book you sell can break their terms. Their downloads are usually sized for screens rather than print, too. Everything you create in Publish Aid is licensed for commercial use and exported as a print-ready PDF sized for Amazon KDP.