Publisher Rocket

Publisher Rocket pulls live data from Amazon to help authors make decisions that used to require guesswork—which keywords shoppers actually search, how competitive a niche is, which categories a book could rank in, and what keywords to use in Amazon Ads. Created by Dave Chesson of Kindlepreneur, it has been the standard Amazon research tool for indie authors since launching as KDP Rocket in July 2016; it took the Publisher Rocket name with version 2.0 in May 2019, once print-book research joined the Kindle-only feature set.

What You Get#

• Keyword search: Enter a topic and see estimated Amazon search volumes, competition scores (0–100), and monthly revenue estimates for books ranking for that term. Identify high-traffic, low-competition keywords worth targeting before publishing. Since v2.0.95 (July 2025) the results flag keywords Amazon may object to.
• Category finder: Browse and filter Amazon's book categories. Each category shows how many daily sales are needed to hit #1—a critical metric for planning launch strategy or choosing where a mid-list title can gain traction. Note the vendor's own two properties disagree on the count: publisherrocket.com advertises 19,000+ categories while Kindlepreneur's review (updated March 2026) says 16,000+.
• Competition analyzer: Enter a competitor's title or ASIN to see their keyword strategy, estimated daily and monthly sales, bestseller rank history, review counts (added December 2025), and which categories they occupy.
• AMS keyword tool: Generate keyword lists formatted for Amazon Advertising campaigns. Include author names, book titles, and ASINs of comparable titles—the types of search terms book buyers actually use on Amazon rather than generic phrase matches.
• Reverse ASIN lookup: Enter any book's ASIN to see which keywords it ranks for in Amazon's top 10 results—useful for analyzing what's working for competing titles. Launched September 2024 and capped at 50 lookups per month per license, resetting monthly. Ad agencies and publishers can ask support for a higher allowance, which the vendor says may cost extra.
• Eight Amazon marketplaces: Research runs against amazon.com, .co.uk, .de, .com.au, .es, .fr, .ca, and .it. The five non-US/UK/German storefronts were added in April 2025 (v2.0.93), along with Spanish, French, and Italian language support.
• Multi-format research: Data applies across Kindle eBooks, paperbacks, and Audible audiobooks. A dedicated Audible-only filter mode lets authors search keywords and categories specific to audiobook buyers.

Who It's For#

• KDP authors preparing a launch: Keyword and category strategy before publishing has a direct effect on discoverability. Publisher Rocket provides the data to make both decisions with specifics rather than estimates.
• Amazon Ads users: The AMS keyword generator reduces hours of manual ad keyword research to minutes, particularly useful when building large campaigns across multiple titles.
• Authors expanding into new niches: Validate whether a genre pivot will reach enough buyers before writing the book.

Pricing: One-time purchase of $199, including all future updates. 30-day money-back guarantee. No subscription or recurring fees. The vendor prices against a $299 anchor on its homepage and runs a standing "act now before it becomes an annual subscription" warning—as of August 2026 the checkout still charges a single $199, but the one-time model is explicitly positioned as something that could end.

Strengths#

• Amazon-sourced data: Keyword and search volume estimates are derived from Amazon's actual search data rather than third-party proxies, making results more relevant to book buyers than general SEO tools.
• One-time purchase model: No recurring subscription fees for a tool authors use repeatedly across their publishing careers. Updates ship free to existing owners, and the free-update promise has held for nine years—Reverse ASIN and international marketplaces both arrived at no extra charge.
• Widely adopted: The vendor claims 117,000+ authors and advertises a 4.8+ Google rating. Independent review volume is thinner than that suggests: its Trustpilot profile carries roughly 63 reviews, clustered in the four-star band.
• Hidden category access: Amazon has thousands of undisclosed book categories not visible during standard publishing. Publisher Rocket surfaces these and shows their competition thresholds.

Limitations#

• Amazon-only: Publisher Rocket pulls Amazon data exclusively. It provides no insight into Barnes & Noble, Kobo, Apple Books, or other retail platforms.
• Estimated data, not exact figures: Monthly earnings and search volume are calculated estimates. The earnings column can be skewed by bestselling outliers, making average figures appear higher than what most independent authors realistically achieve.
• Desktop software only: Requires macOS 10.9+ or Windows (every version except S-Mode and Vista); no browser version, and iPads, tablets, and phones are unsupported. Linux is not an official target, though the vendor's FAQ notes some users run it under Wine.
• Chromebook build lags the desktop app: The Chromebook release sits at version 1.0.31 while Mac and Windows are on 2.0.100, so Chromebook buyers should not assume feature parity.
• Development has slowed: Releases arrived every one to three months through 2025, but v2.0.100 (2 February 2026) was still the newest build six months later.
• Price increase: Previously sold at $97; raised to $199 in 2024. The one-time model remains cost-effective over time, but the upfront commitment is higher than before, and the 30-day guarantee is a refund window rather than a free trial—you must buy to evaluate it.

Alternatives#

K-lytics provides in-depth genre trend reports at a subscription price, offering broader market context beyond keyword data. The free tools on Kindlepreneur's site serve as a lighter starting point before committing to Publisher Rocket. For authors publishing primarily outside Amazon, Publisher Rocket's data has limited applicability.