Niche research,
right on the Amazon book page.
BSR. Multi-format prices. Snapshot history with charts. One-click AI niche analysis with Gemini. All in an overlay that lives on every Amazon product page.
No credit card. Sign in only when you want cloud sync or AI analysis.
What you get
Everything below is in the free tier. Pro adds depth on top — see pricing.
Multi-format pricing + BSR
Live prices for every format on a book — Kindle, Paperback, Mass Market, Hardcover, Audible — pulled straight from the page, alongside Best Sellers Rank and category breakdown.
Track books over time
One click to track any book; we snapshot BSR and per-format prices on every visit and chart the trends. Spot rising titles before they cap out.
AI niche analysis
Gemini 2.5 Flash with thinking mode — a verdict, competitor archetypes, opportunities, pricing strategy, and saturation rating for any niche, in 30-60 seconds.
Bestseller browser
9 curated KDP-relevant categories. Top-30 bestsellers, sortable by rank/reviews/rating/price, filterable by format and minimum review count.
Compare up to 3 books
Overlay BSR trends on a shared time axis to see which books in a niche are climbing or fading — at a glance.
Cloud sync
Sign in once and your tracked books follow you across devices. Free plan covers 10 books with sync; Pro lifts the cap.
Pricing
Free covers solo niche research. Pro arrives once we know what 200+ active authors actually want.
Free
Free foreverEverything you need to research niches.
- ✓ Unlimited book tracking (local)
- ✓ Up to 10 books with cloud sync
- ✓ 5 AI niche analyses per day
- ✓ Multi-format pricing
- ✓ Comparison view
- ✓ Bestseller browser
Pro
Coming soonFor serious authors and indie publishers.
- ✓ Everything in Free, plus:
- ✓ Unlimited cloud-synced books
- ✓ 50 AI analyses per day
- ✓ Top-20 actual competitor scraping
- ✓ Export tracked data (JSON / CSV)
- ✓ Priority processing
Stop guessing. Start scouting.
Install the extension and you'll see live data on the next Amazon book page you open.
Add to Chrome — it's free