How to Research Your KDP Competition Before You Publish

Most KDP tools show you a rank number and stop. But a number doesn't tell you what to publish. The answer is sitting in your competitors' reviews — here's how to mine it before you make a single page.

Start with the books already winning

Find the top 3–5 books for your target phrase. These are your real competitors. You're going to reverse-engineer why they sell and where they fall short.

Read the reviews like a product manager

• 1–3 star reviews = your feature list. Every complaint is something you fix and advertise.
• 5 star reviews = what to keep. Don't break what buyers already love.
• Repeated phrases = keywords. The words buyers use are the words to put in your title and description.

Turn it into a title and description

If buyers keep writing "wish it had thicker paper" and "great gift," your description should say "thick, no-bleed paper" and "perfect gift." You're not guessing keywords — you're repeating the buyer's own language back to them.

The fast version

Reading dozens of reviews by hand works but takes hours. The Spy tool does it in about a minute: paste a competitor's Amazon link and it returns the top complaints, the content gaps, and the title/description keywords — a one-page brief for a book that beats theirs. Pair it with the Niches tool to confirm the niche is worth entering in the first place.