Nichesmith — KDP Niche Research & Book Maker

Free KDP niche research on Amazon: niche scores, BSR, sales estimates, royalties — plus a puzzle book and notebook maker.

Find a KDP niche, plan the book and make it — in one free extension. RESEARCH ON AMAZON • Niche panel on every Amazon book search: a 0–100 score split into Demand, Competition, Indie-friendly and Room for newcomers, with median BSR, estimated sales, reviews and price. • Badges under each result: rank, estimated sales, pages, publish date, publisher. • Book panel: Best Sellers Rank with history, category ranks, estimated sales and a royalty calculator that flags the $9.99 threshold. • Market analysis: new releases in the last 30/90 days and how many of them actually sell. • Buyer complaints: reads the 1–3★ reviews of top books so you know what to do better. • Listing Builder: title words top books use, 7 keyword slots, easy categories, price and page advice. • Batch research for up to 25 keywords (you start it; it runs slowly in a visible window and stops on a captcha). MAKE THE BOOK • Book Maker: word search, sudoku, mazes, word scrambles and cryptograms in English, Turkish, Spanish, German, French and Portuguese — or lined, dot-grid and graph notebooks, planners, habit trackers and logbooks with your own columns. • You get a KDP-sized interior PDF (mirrored margins, embedded fonts) and a matching full-wrap cover PDF with the right spine width. • Every book is checked the way KDP checks it: page size, page count, fonts and margins. • Every build makes fresh puzzles, and Nichesmith warns you when a book reuses shared starter words or your own earlier content. • Series planner: split your themes across volumes, raise the difficulty, add them to your board. • Promo images: 3D book, social post and Amazon A+ image. KDP TOOLS • Cover size and spine calculator with a template. • Interior PDF check, listing check (character limits, words KDP rejects) and a US price & royalty ladder. STUDIO • Book board from idea to published, notes, templates and My books (your own titles' rank and estimated royalty). HONEST AND PRIVATE • Sales figures are estimates from Best Sellers Rank and are always shown as ranges. • No account, no server, no tracking. Your research stays in your browser. • Nichesmith never scrapes in the background. It only reads pages when you ask it to. FREE • Every feature is free: no limits, no trial, no account. • If it helps your books, you can support development with an optional crypto donation (address in the Guide). It unlocks nothing — everything is already open. The interface is available in English, Türkçe, Español, Deutsch, Français and Português. Nichesmith is not affiliated with Amazon. Amazon, Kindle and Kindle Direct Publishing are trademarks of Amazon.com, Inc. or its affiliates. Always check your files in KDP's previewer before publishing.