KDP Lens

Keyword research y análisis de competencia para Amazon KDP. 100% gratis.

KDP Lens — Free Amazon KDP Research Tool for Self-Publishers The free alternative to Publisher Rocket and KDSPY. Instantly analyze any Amazon book's Best Seller Rank (BSR), estimate monthly sales, and find profitable KDP niches — directly inside your browser. No subscription. No API fees. 100% free. ────────────────────────────────────── 🔍 KEYWORD RESEARCH ────────────────────────────────────── Type any keyword and get real Amazon autocomplete suggestions — the same search terms real buyers are using right now. Click any suggestion to instantly analyze the full niche: top books, prices, reviews, and Kindle Unlimited adoption. 📊 BSR & SALES ESTIMATOR ────────────────────────────────────── Open any Amazon book page and KDP Lens automatically reads the real Best Seller Rank from the page and converts it into estimated monthly sales and revenue — using the same power-law formula used by professional KDP research tools. - Best Seller Rank (BSR) — read directly from Amazon - Monthly sales estimate (±20% accuracy) - Monthly revenue estimate (70% royalty calculation) - Daily sales breakdown - Demand Score 0–100 🏆 OPPORTUNITY SCORE A / B / C / D ────────────────────────────────────── Every niche gets a data-driven Opportunity Grade based on: ✔ Average review count of top books (fewer = easier to compete) ✔ Number of books with fewer than 50 reviews (entry opportunities) ✔ Average price point (higher = better royalty margins) ✔ Kindle Unlimited adoption rate Grade A = Excellent entry window Grade B = Good opportunity with strong cover Grade C = Competitive — differentiation required Grade D = Saturated — avoid without Ads budget ⚔️ COMPETITION ANALYSIS ────────────────────────────────────── For every niche search, KDP Lens shows the top books with: - Price - Number of reviews - Star rating - Kindle Unlimited status - Per-book difficulty badge: Easy to beat / Moderate / Hard / Very Hard 🕒 SEARCH HISTORY ────────────────────────────────────── Every niche you analyze is automatically saved with its Opportunity Score. Revisit and re-analyze any past search in one click. 🌍 SUPPORTS MULTIPLE AMAZON MARKETPLACES ────────────────────────────────────── - 🇺🇸 Amazon US (amazon.com) - 🇬🇧 Amazon UK (amazon.co.uk) - 🇩🇪 Amazon DE (amazon.de) - 🇪🇸 Amazon ES (amazon.es) ────────────────────────────────────── WHY KDP LENS? ────────────────────────────────────── Most KDP research tools cost $50–$150/month. KDP Lens gives you the core research workflow — keyword discovery, sales estimation, and competition analysis — completely free, with no account required and no data sent to external servers. Perfect for: → Amazon KDP self-publishers → Low content book creators (journals, planners, coloring books, activity books, workbooks) → KDP authors researching profitable niches → Writers validating book ideas before publishing → Anyone looking for a free Publisher Rocket alternative ────────────────────────────────────── HOW IT WORKS ────────────────────────────────────── 1. Click the KDP Lens icon in your browser toolbar 2. Type any keyword (e.g. "anxiety journal for men") 3. Get real Amazon suggestions instantly 4. Click any suggestion to analyze the full niche 5. Open any Amazon book page to see BSR, sales & revenue data No sign-up. No account. Works immediately after installation. ────────────────────────────────────── PRIVACY & PERMISSIONS ────────────────────────────────────── KDP Lens reads data from Amazon pages you visit. It does not collect, store, or transmit any personal data. All analysis happens locally in your browser. Search history is stored locally on your device only. Permissions used: - amazon.com access — to read book data and search results - Storage — to save your local search history - Tabs — to open Amazon search pages in the background ────────────────────────────────────── DISCLAIMER ────────────────────────────────────── KDP Lens is an independent browser extension and is not affiliated with, endorsed by, or connected to Amazon, Kindle Direct Publishing, Publisher Rocket, KDSPY, or any other third-party service. Sales estimates are approximations based on publicly available BSR data and may vary ±20% from actual figures.