AI BOOK NICHE DISCOVERY ENGINE

We analyze all
Amazon books.
You publish
proven winners.

Skillies AI scans millions of Amazon books, analyzes real sales signals, reviews, BSR, competition and more to surface the specific books winning their niches right now—so you know exactly what to model before you write a word.

Join 12,847+ smart publishers
1. ANALYZE

We scan & analyze
all Amazon books

Amazon.com
Millions of Books
Sales Rank (BSR)
Real-time data
Reviews
Quantity & quality
Categories
Niche mapping
Competition
Market analysis
Trends
Growing demands
2. SORT & DELIVER

We surface the actual books
winning their niches

M
The Mindful Day Journal
$14.99 · BSR 12,431 · 4.6★
Mindfulness Journals
96
Great
P
Prayers for Every Day
$11.99 · BSR 18,205 · 4.8★
Christian Devotionals
93
Great
T
First 100 Words Toddler Workbook
$8.99 · BSR 5,872 · 4.7★
Toddler Activity Books
92
Great
G
The 5-Minute Gratitude Journal
$9.99 · BSR 22,401 · 4.5★
Gratitude Journals
91
Great
R
Smart Retirement Roadmap 2026
$16.99 · BSR 41,228 · 4.4★
Retirement Planning
89
Great
View all proven niches →
AI POWERED ALGORITHM
Analyzing 50M+ data points
every single day
AI Analyzes
50M+ Books
On Amazon.com
Find High-Profit
Niches 10x Faster
Than Manual Research
Proven Data.
Real Results.
No Guesswork
Higher Rankings.
More Sales.
Built on Proven Niches
✕ RUN A SEARCH

Pick a signal. Describe your topic.

The signal is the bet. Your topic narrows where to look.

3 · Format(pick any — none = all)
4 · Advanced filters(optional — overrides the AI)
✕ START

Pay for what you use. Nothing else.

One free search to start. Sign in if you've used Skillies before, or buy a credit pack — no subscription, no auto-renewal.

Sign in or sign up · same input
Continue with your email.
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We use one sign-in across every Skillies tool. New here? Your first search is free, no card needed. Returning? The same email restores your existing license — no password.

✕ THE 8 HIGH-PROBABILITY SIGNALS

We don't find books. We find bets that already work.

Every signal below is a pattern Amazon's data already proves works. Pick one, describe your topic, get back twenty real listings already selling against that exact pattern.

01
Starving niche

Bad reviews — still selling

Under 4★ but still moving units. The market wants better and is paying for mediocre. You ship better.

Under 4★ · BSR ≤ 200,000 · 5+ reviews
02
High revenue

Premium price · low competition

Books at $20+ with under 10 reviews still selling. High revenue per sale, weak incumbent.

≥ $20 · BSR ≤ 150,000 · ≤ 10 reviews
03
Viral sleeper

Top 10k BSR · almost no reviews

Sales rank under 10,000 with under 10 reviews. Pure no-moat opportunity — the book is winning on cover and category alone.

BSR ≤ 10,000 · ≤ 10 reviews · ≥ $10
04
Evergreen

Historical bestseller · few reviews

Steady year-long sales, under 20 reviews. Underserved evergreen markets with proven 365-day demand.

365-day BSR ≤ 100,000 · ≤ 20 reviews
05
Fast to ship

Low-content book selling fast

50–150 page paperbacks (journals, activity books, trackers) moving real volume. Days to produce, weeks to publish.

Paperback · $5–$15 · BSR ≤ 100,000
06
Quality + obscurity

Hidden 5-star gem

Rated 4.5★+ with under 10 reviews. Readers love it — discovery hasn't caught up yet.

≥ 4.5★ · 3–9 reviews · BSR ≤ 100,000
07
Yearly refresh

Year-stamped annual

Sports drafts, game guides, atlases, regulatory updates — refreshes every year. Last year's incumbents are obsolete by January.

"2026" in title · BSR ≤ 200,000 · ≤ 50 reviews
08
Displaceable

"Complete Guide" · low-rated

Reference guides with bad reviews that still sell — no better option exists. Build the better option.

"Complete Guide" · ≤ 4★ · ≤ 100 reviews
Run a hunt ↑Pick a signal · describe your topic · get 10 real listings.