Fertility & Infertility — Kindle Category Opportunity
Competition snapshot for the Parenting & Relationships best-seller list, ease-of-entry score 8.5/100.
Category metrics
Score
8.5
Median reviews
167.5
Weak share (top 20)
15%
Median price
$9.99
Median star rating
4.6
Books scanned
50
Worth writing in?
Fertility & Infertility is between the extremes: 15% of the top 20 is under 100 reviews against a median of 167.5, so entry depends on the specific sub-genre and your launch strength. Read the breakout books below before judging. Ease-of-entry score 8.5/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 15 | Yogic Mother : Short Guide From the Realms of Motherhood | — | 0 | $2.99 |
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 |
|---|---|---|
| getting pregnant | 4 | 114 |
| egg quality | 3 | 103 |
| get pregnant | 2 | 93 |
| abandoned at the altar | 2 | 87 |
| altar pregnant | 2 | 87 |
| birth control | 2 | 81 |
| pregnancy and childbirth | 2 | 78 |
| women health | 2 | 76 |
| first time | 3 | 73 |
| polycystic ovary syndrome | 3 | 73 |
| starts with the egg | 2 | 71 |
| first time pregnancy | 2 | 54 |
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Check 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.
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Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.