basal body temperature thermometer
Skip itPrices mostly outside the sweet spot ($4.37–$12.70) — this niche doesn't clear our bar today.
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Conversion
Great11.8%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Review moat
Okay3,876.67avg incumbent reviews — the moat a new listing must climb
Market size
Bad£88K£88K/yr · 103K searches
Avg price
Bad£7.27avg listing price — sweet spot $15–$100
Brand share
Bad94%top-5 brand share — brand-locked demand
Growth
Bad-21.8%90-day search growth — must beat 0% to launch
Competition
Bad86%top-5 click share — a locked-up shelf
Price range
Bad£4.37–£12.70cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, basal body temperature thermometer is a £88K/yr Amazon United Kingdom market (103K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Feb. Verdict: Skip it — 38/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
basal body temperature thermometer market data
- Units sold / yr
- 10K–13K
- avg 1,250–1,500/product
- Revenue / yr
- £73K–£91K
- units × avg price
- Conversion rate
- 11.8%
- Avg BSR
- #7
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 89%
- Out of stock
- 0.0%
- Avg brand age
- 66 months
- Avg seller age
- 176 days
Competition & brand share
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 falling
Sellers
23
Top-5 brand share
94%
Top 20: 100%
Top-5 click share
86%
Top 20: 100%
Open market
3%
- Easy@Home58%
- iProvèn25%
- BabyMad4%
- Preview4%
- Braun4%
- One Step3%
- Open — no brand owns it (1 brand, 3%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -21.8% search growth over the last 90 days.Peak months: Feb · busiest ÷ quietest = 1.6×
Top basal body temperature thermometer search terms
- basal body temperature thermometer38K/yr
- bbt thermometer for ovulation22K/yr
- basal thermometer for ovulation14K/yr
- bbt thermometer10K/yr
- basal thermometer8K/yr
- ovulation thermometer5K/yr
- natural cycles thermometer3K/yr
- bbt3K/yr
Top basal body temperature thermometer 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.
All 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Ovulation Tracker Digital Basal Thermometer: Easy@Home BBT Thermometer for Fertility Tracking - Basal Body Thermometer for Accurate Temperature Monitoring with Premom App Purple DMT-3018
Easy@Home£7.334.2★3,390 rev
Digital Basal Thermometer 1/100th Degree High Precision Quick 60-Sec Reading Memory Recall Accurate BBT Thermometer for Natural Ovulation Temperature Tracking by iProven
iProvèn£7.414.2★6,023 rev
Ovulation Tracker Digital Basal Thermometer: Easy@Home BBT Thermometer for Fertility Tracking - Basal Body Thermometer for Accurate Temperature Monitoring with Premom App Pink DMT-3018
Easy@Home£7.294.2★3,390 rev
Digital Basal Thermometer Ovulation with Backlight LCD Display Premom APP(NOT Bluetooth) 1/100th Degree High Precision Memory Recall Ovulation Tracking Charting & Natural Family Planning Purple
Easy@Home£12.704.2★8,886 rev
Basal Thermometer for Ovulation - Switchable C/F - Temperature Chart - Hard Storage Case - BabyMad
BabyMad£4.374.2★641 rev
Newest
by launch date
One Step Basal Body Temperature Thermometer with Bluetooth Digital Ovulation & BBT Tracker with Automatic App Sync for Fertility & Cycle Monitoring
One Step£6.8234 rev
Preview Digital Basal Thermometer for Ovulation Tracking Basal Body Temperature Thermometer BBT for Fertility Prediction High Accuracy IP22 Waterproof
Preview£4.6751 rev
Ovulation Tracker Digital Basal Thermometer: Easy@Home BBT Thermometer for Fertility Tracking - Basal Body Thermometer for Accurate Temperature Monitoring with Premom App Pink DMT-3018
Easy@Home£7.293,390 rev
Ovulation Tracker Digital Basal Thermometer: Easy@Home BBT Thermometer for Fertility Tracking - Basal Body Thermometer for Accurate Temperature Monitoring with Premom App Purple DMT-3018
Easy@Home£7.333,390 rev
Digital Basal Thermometer Ovulation with Backlight LCD Display Premom APP(NOT Bluetooth) 1/100th Degree High Precision Memory Recall Ovulation Tracking Charting & Natural Family Planning Purple
Easy@Home£12.708,886 rev
Trending
90-day click momentumOne Step Basal Body Temperature Thermometer with Bluetooth Digital Ovulation & BBT Tracker with Automatic App Sync for Fertility & Cycle Monitoring
One Step£6.824.2★
Basal Thermometer for Ovulation - Switchable C/F - Temperature Chart - Hard Storage Case - BabyMad
BabyMad£4.374.2★
Preview Digital Basal Thermometer for Ovulation Tracking Basal Body Temperature Thermometer BBT for Fertility Prediction High Accuracy IP22 Waterproof
Preview£4.674.0★
Digital Basal Thermometer 1/100th Degree High Precision Quick 60-Sec Reading Memory Recall Accurate BBT Thermometer for Natural Ovulation Temperature Tracking by iProven
iProvèn£7.414.2★
Ovulation Tracker Digital Basal Thermometer: Easy@Home BBT Thermometer for Fertility Tracking - Basal Body Thermometer for Accurate Temperature Monitoring with Premom App Purple DMT-3018
Easy@Home£7.334.2★
What buyers say about basal body temperature thermometer
What buyers praise and complain about, mined from review topics.What buyers love
“easy to read”
“It is good quality and accurate”
“Great thermometer”
“Good accuracy”
“Item does exactly what it says”
“The Bluetooth sync is really useful”
“it does the job well”
“Affordable”
“The battery life seems good”
“the digital display is clear enough to read at a glance”
What buyers complain about
“Can't measure temperature accurately might have been an issue with my specific thermometer”
“Shows a different temperature every time”
“The age precision colour coded technology did not work so it was returned for a replacement as it was a faulty item”
“low battery life”
“Unreliable and costky”
“Broke in 2 years”
“Quality is not great - sounds like the battery is dying after just a couple of uses”
“App costs £43per year”
“misleading app advertisement”
“Extra features make it less clear how to use”
Top return reasons
Common questions
- Is basal body temperature thermometer profitable to sell on Amazon United Kingdom?
- The niche generates £88K/yr across 9 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -21.8%. Flapen's verdict: Skip it (38/100).
- How competitive is the basal body temperature thermometer niche?
- 7 brands and 23 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 94% of demand.
- What do buyers complain about in basal body temperature thermometer?
- Top complaints mined from reviews: Measurement/Reading Accuracy, Temperature Control, Functionality-Overall. The return rate is 0.8%.
- When does demand for basal body temperature thermometer peak?
- Demand peaks in Feb; the busiest month runs 1.6× the quietest.
- What does it cost to enter the basal body temperature thermometer niche?
- Listings span £4.37–£12.70; the average listing price is £7.27 (sweet spot $15–$100). The average incumbent carries 3,877 reviews — the moat a new listing must climb.