Nature & Ecology — Kindle Category Opportunity
Competition snapshot for the Science & Math best-seller list, ease-of-entry score 42.0/100.
Category metrics
Score
42.0
Median reviews
796.5
Weak share (top 20)
20%
Median price
$2.99
Median star rating
4.6
Books scanned
50
Worth writing in?
Nature & Ecology is between the extremes: 20% of the top 20 is under 100 reviews against a median of 796.5, so entry depends on the specific sub-genre and your launch strength. Read the breakout books below before judging. Ease-of-entry score 42.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 3 | Naturalist 25th Anniversary Edition | 4.6 | 27 | $1.99 |
| 5 | Honey: Recipes From a Beekeeper's Kitchen | 4.5 | 61 | $0.99 |
High-frequency phrases in this category's titles
Mine all categoriesHigh-frequency phrases mined from the 50 best-seller titles on this category's list. The ease-of-entry score tells you how winnable the category is; these title phrases tell you which words readers search with — use the two layers together. Frequency is a title statistic, not a search-volume estimate.
| Phrase | Titles | Rank-weighted score |
|---|---|---|
| north america | 3 | 83 |
| ring of fire | 2 | 59 |
| birds of north america | 2 | 52 |
| secret world | 2 | 48 |
| new history | 2 | 40 |
| beginner guide | 2 | 37 |
Sign in and click any phrase to send it straight to the keyword competition lookup.
More Science & Math categories
10 subcategories under this category
| Subcategory | Score | Median reviews |
|---|---|---|
| █████ | 77.0 | 1 |
| █████ | 73.0 | 2 |
| █████ | 63.0 | 23 |
| █████ | 61.0 | 27.5 |
| █████ | 57.5 | 10 |
| █████ | 52.0 | 42.5 |
| █████ | 38.5 | 189.5 |
| █████ | 11.0 | 139.5 |
| █████ | 10.0 | 244 |
| █████ | 7.0 | 340 |
Subcategory names are visible after sign-in — a free account unlocks every subcategory score.
Sign up free to unlockCheck the keywords before you write
Category scores show where entry is easiest; keyword lookups show whether readers actually reach for it. A free account includes keyword competition lookups plus unlimited category scans.
After you publish: why aren't readers buying?
Category research picks the direction; review diagnosis reads the readers. The same platform clusters a book's critical reviews into severity-ranked root causes, each anchored to verbatim quotes — see it applied to a full narrative-history title.
Keep researching with the free tools
Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.