Relationships — Kindle Category Opportunity
Competition snapshot for the Health, Fitness & Dieting best-seller list, ease-of-entry score 37.5/100.
Category metrics
Score
37.5
Median reviews
4,562
Weak share (top 20)
15%
Median price
$9.54
Median star rating
4.6
Books scanned
50
Worth writing in?
Relationships is between the extremes: 15% of the top 20 is under 100 reviews against a median of 4562, so entry depends on the specific sub-genre and your launch strength. Read the breakout books below before judging. Ease-of-entry score 37.5/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on AmazonNo breakout books in this category.
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 |
|---|---|---|
| new york times | 2 | 74 |
| irish mafia | 2 | 72 |
| conversations for lifetime | 2 | 36 |
| lifetime of love | 2 | 36 |
| self love | 2 | 28 |
Sign in and click any phrase to send it straight to the keyword competition lookup.
More Health, Fitness & Dieting categories
4 subcategories under this category
| Subcategory | Score | Median reviews |
|---|---|---|
| █████ | 37.5 | 2460.5 |
| █████ | 37.5 | 2638 |
| █████ | 37.5 | 2412.5 |
| █████ | 7.5 | 2865 |
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.