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fertility tracker

Skip it

A deep review moat (10,152 avg reviews) — this niche doesn't clear our bar today.

Market size 53Growth 24Conversion 34Competition 33Returns 93Price range 34Avg price 75Brand share 32Review moat 22Quality gap 76

Returns

Great1.1%

return rate — above 5% kills the launch gate

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Avg price

Great$101.14

avg listing price — sweet spot $15–$100

Market size

Good$338K

$338K/yr · 123K searches

Conversion

Okay2.7%

search→purchase rate — share of searches ending in a sale

Price range

Okay$10.06–$263.53

cheapest to priciest tracked listing — scored on the share inside $15–$100

Competition

Okay65%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay86%

top-5 brand share — brands hold most of the demand

Growth

Bad-2.3%

90-day search growth — must beat 0% to launch

Review moat

Bad10,152.29

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, fertility tracker is a $338K/yr Amazon United States market (123K searches/yr). The top 5 brands hold 86% of demand. Verdict: Skip it — 46/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

fertility tracker market data

Units sold / yr
3K–3K
avg 0–100/product
Revenue / yr
$253K–$303K
units × avg price
Conversion rate
2.7%
Avg BSR
#46
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
4.5%
Avg brand age
50 months
Avg seller age
154 days

Competition & brand share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 falling

Sellers

27

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

65%

Top 20: 100%

Open market

9%

  • Mira31%
  • Clearblue20%
  • Inito16%
  • Easy@Home11%
  • kegg7%
  • femometer6%
  • Open — no brand owns it (5 brands, 9%)

Demand

Weekly Amazon search volume, last 37 weeks — -2.3% search growth over the last 90 days.
15K10KSpike '26Nov '25Dec '25Jan '26Mar '26Apr '26May '26

Top fertility tracker search terms

  • fertility tracker93K/yr
  • at home fertility test for women5K/yr
  • fertility tracker for women8K/yr
  • fertility monitor for women8K/yr
  • womens fertility test5K/yr
  • ovulation monitor4K/yr
All search terms

Top fertility tracker products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%$34K20%$68K30%$101K40%$135K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 17 tracked products in this niche — three views at once, no toggling.

What buyers say about fertility tracker

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use28%

“Easy to read”

Fertility/Conception22%

“This is a great for trying to conceive”

Value For Money10%

“Good value for the price”

Accuracy-Overall8%

“Easy and Accurate”

Quality-Overall7%

“good quality”

Efficiency5%

“worked really well”

Health Monitoring3%

“is SO helpful to track”

Hormonal Balance3%

“It's great to have the ability to monitor these key hormones so closely”

Advertised Vs Actual Product2%

“As described”

Visibility1%

“As clear as OPKs can get”

What buyers complain about

Functionality-Overall21%

“DID NOT WORK”

Accuracy-Overall15%

“unsure about accuracy”

Value For Money10%

“WASTE OF MONEY”

Durability7%

“Broken”

Ease Of Use5%

“confusing to use”

Measurement/Reading Accuracy5%

“Faulty Tests”

Quality-Overall4%

“Cheaply made product, bad quality”

Connectivity-Overall3%

“It won't connect”

Software/Application2%

“The app is not very user friendly”

Color2%

“these tests dont give a uniform color on the test line the same way the pregmate tests do so our results were all over the place”

Top return reasons

Functionality-Overall38%
Value For Money9%
Advertised Vs Actual Product7%
Accuracy-Overall7%
Measurement/Reading Accuracy7%
Size-Overall6%
Compatibility-Overall4%
Product Condition3%
Software/Application2%
Display-Overall2%

Common questions

Is fertility tracker profitable to sell on Amazon United States?
The niche generates $338K/yr across 17 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -2.3%. Flapen's verdict: Skip it (46/100).
How competitive is the fertility tracker niche?
11 brands and 27 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 86% of demand.
What do buyers complain about in fertility tracker?
Top complaints mined from reviews: Functionality-Overall, Accuracy-Overall, Value For Money. The return rate is 1.1%.
What does it cost to enter the fertility tracker niche?
Listings span $10.06–$263.53; the average listing price is $101.14 (sweet spot $15–$100). The average incumbent carries 10,152 reviews — the moat a new listing must climb.