Publisher Rocket Free Trial – KDSPY Free Alternative
Check out the Publisher Rocket FREE Trial for 30 days! completely risk-free with a money-back guarantee. KDSPY also offers great value at less than 40% of the cost.
Publisher Rocket is the Best Alternative to KDSPY. Get your book on that bestseller list! Check it out today with a FREE Trial and see for yourself.
Publisher Rocket vs KDSPY

If you’re comparing Publisher Rocket vs KDSPY, you’ve come to the right place. Choosing the best tool can feel overwhelming when both promise faster keyword research, niche insights, and competitive data. In this post, we’ll walk you through how each stacks up—so you can pick the perfect publishing sidekick for your indie author journey.
Publisher Rocket is a huge upgrade from KDSPY, in the sense that it has not only the same features as Spy but much more in the way of analysis.

According to some users, KDSPY makes it much easier to find niche markets than PR, but both have the ability to cull this data plus, Publisher Rocket has a new Category Hunter feature that newer users rave about (more on this later).
KDSPY Free Alternative FAQ
1. Is Publisher Rocket a free alternative to KDSpy?
Yes. Publisher Rocket offers a 30-day free trial, making it a great KDSpy alternative for Amazon KDP authors. During this trial, you can perform keyword research, explore categories, and analyze competitors without paying upfront.
2. What features can I use in Publisher Rocket’s free trial?
During the Publisher Rocket free trial, you can access keyword research tools, category analysis, and competitor insights. This provides almost the same functionality as KDSpy, helping authors find profitable niches and optimize their Amazon KDP listings.
3. How long is Publisher Rocket’s free trial?
Publisher Rocket offers a 30-day free trial, giving you a full month to test its tools. This makes it an excellent choice for authors who want a risk-free KDSpy alternative before committing to a subscription.
4. Can Publisher Rocket replace KDSpy for niche research?
Absolutely. With its free trial, Publisher Rocket can replace KDSpy for most KDP research tasks. Authors can uncover top keywords, analyze competition, and discover profitable categories — all without spending any money during the trial period.
5. Why choose Publisher Rocket over KDSpy?
Publisher Rocket is a strong KDSpy alternative because it provides more comprehensive keyword data, and a user-friendly interface. Authors can test the platform risk-free, making it ideal for beginners and seasoned self-publishers alike.
6. Is Publisher Rocket worth it?
Yes, absolutely, read our review thoroughly and see all the features that can propel your sales. If you are not happy, you can claim a refund so you really have nothing to lose
7. How do I update the Publisher Rocket Software?
When you open the software, you simply scroll to the bottom and take note of the version number. If there is a new version then simply download, delete the old files and install.
8. Is Publisher Rocket hard to use?
No, once you login, it’s very intuitive and there are plenty of tutorials available.
9. How much does Publisher Rocket cost?
The current cost is $199 but keep in mind that there is a 30 day money back guarantee
10. Does Publisher Rocket produce results?
Find out for yourself. The 30 day trial will give you ample time to measure exactly what the software can offer you
11. Can I install Publisher Rocket on my Device?
Publisher Rocket works seamlessly on Mac OS 10.9 or newer and supports all current Windows versions, except for S-Mode, Windows Vista, or systems older than 10 years. It doesn’t work with iPads, tablets, or smartphones as it’s a desktop tool.
12. Does Publisher Rocket offer a full Money Back Trial Period?
Yes, Publisher Rocket can be used completely free of charge for 30 days during the trial period. Just remember to cancel before 30 days to avoid being charged
How Can Publisher Rocket Help Self-Publishing?
Publisher Rocket (KDPR) is all the rage as the best rocket software for online e-book publication. It is more than that, though. It is a fully comprehensive program to help you find the book categories and most popular subjects trending right now. It boasts a wide range of features including:
- A clear idea search field which leads to a full display of the results
- See the average number of niche competitors and the average earnings on a monthly basis.
- Amount of searches on Amazon and Google, which is ideal to have
- Scoring for competition
- AMS keyword search
- Easier discovery of sub-niche categories
- Full data for a given niche
- Excellent niche finder
- Kindlepreneur Calculator for sales estimate
It is considered a superb overall tool with capability in all categories. Updates will allow this software to expand and become more developed in the near future.
When you are using self publishing software under the Kindle wing, you need to draw as much as possible from Kindle tools in order to have the most success.
Publisher Rocket Free
You can get Publisher Rocket Free of charge to test out before committing to purchase. The program was created by Dave Chesson.

Don’t forget to watch out for special Publisher Rocket Black Friday Deals and Cyber Monday offers in November.
Amazon Ads Software Tool – Free Online Course for Limited Time!
A real game changer from the guys at Publisher Rocket! The Amazon Ads 2.0 Feature helps you instantly target high converting keywords and turn clicks into book sales.
For a limited time, you can enroll completely free of charge for their Amazon Advertising Course. Finding converting Amazon Ad KW’s is just one aspect you will learn.
It can also work as a temporary kdspy free alternative for thirty days if you need something short term having no further free trial options..
- A Beginner’s Guide to Advertising Books on Amazon run by Publisher Rocket
- Creating and Launching Your Amazon Book Ad Campaign
- The Crucial Role of Relevance in Amazon Book Advertising
- How to Select Effective Keywords for Amazon Book Ads
- Strategies for Optimizing and Managing Your Amazon Book Ad Campaigns
….and much more. Click HERE or the image below to access.
KDSPY Overview
Right from the start, KDSPY takes you into a categories page so you can compare one category to another in order to see which is more successful.
To see what’s working well within categories, the KDSPY ‘Word Cloud’ feature aggregates common words across profitable titles within a given category. As useful as this may sound, the end result is often just a list of obvious words that don’t help much with generating a new idea.
Kindle Top Seller Lists
Publisher Rocket lists the top sellers within the other existing comparison charts providing a total view of the niche and keyword positions. Within listings on Spy, best-sellers are simply identified with an orange label on search results.
Kindle Search Data from multiple Amazon Websites
With the latest version of KDSPY, you can access search data from Amazon stores including USA, UK, Italy, Spain, India, Germany, Canada, Australia, Japan and Mexico. Consider KDSPY as an affordable Publisher Rocket Free Alternative.
Book Bolt Free Alternative
Publisher Rocket offers a 30 day Free Trial while Bookbolt offers just 3 days. Book Bolt is a browser-based market research tool designed for authors publishing on Amazon Kindle Direct Publishing (KDP). It allows users to analyze real-time data directly on Amazon’s product pages, helping authors make informed decisions about book categories, rankings, and competition.
Unlike traditional software such as KDSPY or Publisher Rocket, Book Bolt requires no installation and runs in any modern web browser. This makes it compatible across all operating systems, including Chromebooks. Its interface is lightweight and intuitive, displaying live data overlays on Amazon listings without disrupting the browsing experience.
Book Bolt Features
Bookbolt’s core features include the ability to view estimated monthly sales and earnings for Kindle books, analyze category performance, monitor bestseller rank trends, and assess competition within specific niches. Users can explore multiple categories quickly to identify less competitive or high-potential opportunities.
The tool is particularly useful for category selection, comparative analysis of competing titles, and on-the-fly research while browsing Amazon. However, it does not offer advanced keyword analysis or Amazon Advertising (AMS) campaign tools, which are strengths of more comprehensive platforms like Publisher Rocket.
Book Bolt is available via a low-cost monthly subscription or yearly susbcription with a newbie tier and a pro tier. Sign up for a Book Belt Free Trial and read our full review.
KDP SPY
KDP SPY is a variation on the names of both KDP Rocket (Publisher Rocket) and Kindle Spy. This can lead to some confusion as there is also a browser extension that goes by this name.
Both Publisher Rocket and KDSPY are vastly superior products in our opinion which are constantly updated to serve customer needs.
Kindle Samurai
Samurai is the lowest in the ranks for keyword software in this category. It is slim version of all of them, at the lowest cost, and with the least features, particularly with keyword identification and demand data.
KD Spy easily surpasses Kindle Samurai. Publisher Rocket, however, seems to stand above the rest with the most advanced, full capabilities of all. It boasts all features in one software tool.

Publisher Rocket Review
Clearly the goal of any self-publishing tool is to help generate or refine your e-book idea so that it will be popular, will be read, and can lead up to the creation and sales of any further publications. It makes it easier to place your brand within a popular field so it will get noticed.
Google & Amazon Search Volume – Rocket Keywords
A detailed feature in Publisher Rocket allows you to see how often keywords are searched for on Google along with an estimate for Amazon Kindle Keyword searches.
So, in addition to getting the right keywords to begin with, Rocket allows you to see the keyword search rankings in real time.

For example, as you are doing an idea search, the idea page comes up with a list. First, you will be able to see the listing of ideas that match, then see the amount of competition you will have and the earnings these publications are making.
The number for estimated Amazon searches is unique to Rocket and gives it a clear advantage over KD Spy, Kindle Samurai and other Kindle self-publishing tools.
Analyze Tab
The analyze tab allows you to get a clear analysis of all publication volumes. Comparison data is sought by most writers and also they require an understanding of how categories are ranking. With this, you can have:
- Precise keyword analysis software data, showing what publishers and writers are presently involved with re: subjects within the niche markets you wish to write for
- Finds and identifies publication volumes for comparison
- KDSPY and Kindle Samurai do not offer this feature
The best aspect of the Analyze tab is the comparative profile it will provide so as to show you whether a particular book is worth writing or not. If the competition is too fierce, don’t bother.
Kindle Competitors Analysis
With regard to the competition, you will want to see everything you can about competitors. Besides the search volume and basic statistics, more is better in this case and, Publisher Rocket can definitely offer more.
Before going into any book venture you plan on self-publishing, please understand how hot and heavy the competition is.
If you have the experience, you understand that it’s critical to know where your competitors are falling in the charts, how old their publications area and possible available sub-niche placements.
Sub Niche Research
The sub-niche markets still have higher potential. When you do find those and they seem to work with the ideas you are fostering, look further with the competition searches tab to get a full picture. Rocket software makes it incredibly easy to do so.
You can see everything, absolutely everything about your competitors! Better still, it all shows up on the first page. Scroll as you see fit and then click on any you are interested in to see some real numbers.
If you want to know the number of reviews written for a book, you will find it with Rocket.
In addition, you will find the Amazon Best Seller Rankings and how old the book is, measured by days.
Kindle Category Finder
As mentioned, Publisher Rocket has many similarities to KDSPY. Spy was formerly the best way to find book categories which would be practical for writing within so publishers can make money. After all, this is the main idea and goal to accomplish for most of us.
Kindle Category Hunter
Publisher Rocket has added a new and exciting feature known as “category hunter” which gives it even more of an edge over KDSPY.
What it does is very much like it reads. It helps you to hunt down the ideal Kindle categories for maximum publishing potential, leaving more time to research and write the content well.
The orange, bright flashing colors show up again to identify the best-sellers. The displaying of these categories will also provide ideas for brand new categories in which to publish more selling material.
Publisher Rocket vs KDSPY
Compare interface and usability
What’s it like when you first fire up each tool? Getting comfortable with the layout and workflow is crucial, especially when you need insights on the fly.
Publisher Rocket interface
Publisher Rocket opens as a standalone desktop app (Windows and Mac), giving you a clean workspace without distractions. You’ll find:
- A left-hand menu to jump between modules (keyword research, category search, competition analyzer).
- Graphical charts for search volume and competition levels (color-coded for quick scans).
- A built-in book analyzer that instantly pulls data when you type in an ISBN or title.
This layout feels polished and intuitive. All the main features are a click away, so you won’t waste time hunting through menus.
KDSPY interface
KDSPY lives in your Chrome or Edge browser as an extension, overlaying key data directly on Amazon pages. You get:
- A floating toolbar that appears on any Kindle bestseller list or search results page.
- Bar charts for best seller rank (BSR) trends, estimated monthly sales, and book count in the category.
- Right-click data export to CSV, letting you build your own spreadsheets.
Because it sits on top of Amazon, you never leave the site—handy if you research while you browse. On the flip side, the overlay can feel cramped on smaller screens.
Keyword Research Tools Comparison
Solid keyword data helps you target search terms that actually sell. Let’s see what each tool offers.
Keyword data in Publisher Rocket
Publisher Rocket’s keyword module is its bread and butter. You’ll get:
- Search volume per month, giving you a feel for reader interest.
- PPC (pay-per-click) bid estimates, so you can plan Amazon Ads budgets.
- Competition score (out of 100) based on how many books use that phrase in title or subtitle.
- Suggested long-tail variants, filtered by volume and competition.
Plus, you can export up to 1,000 keyword ideas at once. If you’re building an Amazon ads campaign or optimizing your book’s metadata, these details are gold.
Keyword data in KDSPY
KDSPY doesn’t have a dedicated keyword explorer, but it surfaces the most popular search phrases behind top-selling titles. You’ll see:
- Top keywords authors are using (pulled from title, subtitle, and metadata).
- A quick estimate of how many books rank under each phrase.
- Easy filtering by BSR or alphabetical order.
It’s more of a peek over competitors’ shoulders than a true explorer. If you want broad keyword discovery, Publisher Rocket wins, but KDSPY can spark ideas while you scan best seller lists.
Analyze market intelligence features
Beyond keywords, you need to understand category trends, competition density, and sales estimates.
Publisher Rocket market insights
With Publisher Rocket you can:
- Search Amazon categories directly to see book counts, average BSR, and average pages.
- Identify low-competition subcategories that match your niche.
- Analyze individual books by ISBN or title for sales estimates, revenue breakdown, and category placement.
- Compare up to three books side-by-side for a quick SWOT-style snapshot.
This depth helps you choose the right category path and avoid overcrowded markets.
KDSPY niche research
KDSPY shines when you’re browsing Amazon. It lets you:
- View historical BSR charts (up to 90 days) for real-time trend spotting.
- Sort categories by number of books, average sales, and growth rate.
- Export entire bestseller lists with sales figures and category info.
It’s perfect for quick pulse-checks: which categories are heating up right now, and which are stagnant?
Customer Support
Even the best tools have hiccups. Knowing you can get help is reassuring.
Support resources for Publisher Rocket
- Email support with a typical response time under 24 hours.
- Active Facebook community where you can ask questions and share wins.
- Video tutorials and PDF guides walking you through every feature.
- Periodic webinars on advanced research techniques.
The support ecosystem around Rocket feels like having a mentor when you need one.
Support resources for KDSPY
- Email help desk for technical questions.
- Online knowledge base with setup instructions and FAQs.
- Occasional blog posts announcing feature updates.
KDSPY support is leaner, but the extension’s simplicity means fewer troubleshooting needs.
Publisher Rocket Free Trial UK
In September 2020, a much sought after update was added to Publisher Rocket. This was the inclusion of the UK market meaning UK specific categories including all the usual top notch analytical options to dig right down into that precious data and unlock great opportunities.
New Features added Regularly
There are many other interesting features to the KDPR software. Naturally, you will need to purchase the software and use it for it to be effective. It is still a good idea to leave your Kindle tab open while working, as it will help in the long run.
Sign up today and you can avail of a Publisher Rocket free trial for 30 days. Remember it’s absolutely gratis with a money-back guarantee.
You won’t find any torrent downloads or cracked versions of this software that are safe, reliable and up to date.
Try Publisher Rocket free it for a month and see why it offers so much value at $199. As you can tell from all of the above, it’s certainly a very worthy KDSPY alternative.
Cons to Publisher Rocket
First, even though Publisher Rocket does a great job of displaying all categories, this display is mixed up with other Kindle book titles and physical books.
This can be confusing to weed through. Perhaps they were moving too fast to develop a more friendly user interface for this feature.
Ratings from other e-book companies
One thing that would be good for an add-on is the capability to view the ratings for paper-published books, publishing from other e-book companies, as well as Kindle statistics for their titles.
You already understand that Kindle is your platform, as you want to be a self-publishing writer for Kindle.
This all makes sense, but Publisher Rocket definitely takes a slide by not providing such information at this time, at least not in a manner that is easy to read and identify as you are building your project from the ground up.
Full Reviews
Second, with previous versions of Rocket, the software actually gave you the ability to see the whole, actual reviews for publications on Amazon. This was useful because, often, a writer needs to read reviews for reasons of both writing and editing.
The present version no longer offers such a feature. It does still list the number of reviews, just not the specific reviews themselves. On the prior version, all you had to do was click on the publication for a full review.
How Can Publisher Rocket Work for Me?
If you are a writer, particularly for writing top-notch articles from scratch or e-books, there is no way this product could not be useful to you. This is, of course, if you plan on publishing through Amazon.
If you have used or still use KD Spy, Kindle Samurai and/ or other Kindle software, it is important to at least try Publisher Rocket and see if it serves your needs. It will make keyword discovery and generation so much easier.

Notice all the features to your advantage. In the event that you are learning about content and article writing, you will also find this software well worth the purchase.
You can always try out some other software programs aimed to different publishers if you decide that you dislike PR. However, considering that Amazon is becoming the market leader for all e-book publishing, it will probably be best to work with Rocket and publish with Kindle.
Gain a Competitive Edge with Rocket Publishing
PR summarizes and collects pertinent data for the writing and marketing of published materials. Moreover, it provides all the marketing statistics needed to pursue the proper categories which can lead to significant profits.
Realize your full Writing Potential
PR makes the process of maximizing your writing potential faster and more profitable.
So what are you waiting for? Start discovering profitable book ideas and niches, rank easily and soar to the top of Amazon’s best seller lists.
