Frequently Asked Questions

KDP Radar is built for self-published authors and publishers who sell books through Amazon Kindle Direct Publishing (KDP). Whether you publish low-content books, fiction, or non-fiction, KDP Radar helps you make data-driven publishing decisions.

KDP Radar is browser-native (no Chrome extension required), offers unlimited searches on every plan, costs $19/month (compared to $40–$119/month for similar tools), and is the only KDP research tool with first-class Spanish-language keyword support.

No. KDP Radar runs entirely in your browser. Just log in at kdpradar.com and start researching. There is nothing to install or update.

Every KDP Radar plan includes: ASIN Lookup, Keyword Research, Niche Finder, Reverse Keywords, Category Finder, Royalty Calculator, Opportunity Scoring, BSR Tracker, and Sales Estimator.

ASIN Lookup lets you enter any Amazon book's ASIN and see its estimated monthly sales, BSR history, review count, pricing, and category rankings. Use it to evaluate competitors in any niche.

Reverse Keywords shows you every keyword a specific book ranks for on Amazon. Enter a competitor's ASIN and see exactly which search terms drive traffic to their listing.

Niche Finder helps you discover profitable book categories on Amazon KDP. It scores niches by demand, competition, and revenue potential so you can find opportunities before they get saturated.

Opportunity Score is a composite metric that combines demand, competition, and revenue potential into a single number (0–100). A score of 70+ indicates a strong publishing opportunity.

Yes. The BSR Tracker monitors Best Seller Rank changes for any book over time, so you can see sales trends and seasonal patterns.

KDP Radar costs $19 per month. We are currently offering founder pricing, which means your $19/month rate is locked for life — it will never increase.

Yes. KDP Radar offers a 7-day free trial with no credit card required. You get full access to every feature during your trial.

After 7 days, you can subscribe for $19/month to keep using KDP Radar. If you don't subscribe, your account remains but you'll lose access to the research tools until you upgrade.

No. Every KDP Radar plan includes unlimited keyword searches, ASIN lookups, niche searches, and reverse keyword lookups. There are no monthly caps.

Yes. KDP Radar is the only KDP research tool with first-class Spanish-language keyword support. You can research keywords, niches, and competitors in the Spanish-language Amazon marketplace.

KDP Radar currently covers the Amazon US marketplace (amazon.com). Support for additional marketplaces is on our roadmap.

Visit kdpradar.com and sign up for a free 7-day trial. No credit card required. You'll have immediate access to all tools including ASIN Lookup, Keyword Research, Niche Finder, and more.

Start with KDP Radar's Niche Finder to browse categories by demand and competition. Then use ASIN Lookup on the top books in promising niches, and run Reverse Keywords to find low-competition keyword opportunities. Look for niches with an Opportunity Score of 70 or higher.

Absolutely. KDP Radar's niche and keyword research tools work for all KDP book types — including low-content books like journals, planners, coloring books, and activity books.

KDP Radar's sales estimates are based on BSR data and proprietary algorithms calibrated against real Amazon sales data. While no estimator is 100% precise, our estimates give you a reliable directional indicator for comparing books and niches.