---
title: "Phyn Smart Water Sensor — $51K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/phyn-smart-water-sensor"
last_updated: "2026-08-08T19:24:37.467Z"
locale: en
meta:
description: "Niche score 23/100 · $51K/yr market · 20K searches/yr · $378.49 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 23/100 · $51K/yr market · 20K searches/yr · $378.49 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Phyn Smart Water Sensor — $51K/yr Amazon US Niche (2026) - Flapen"
---
# **phyn smart water sensor**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 13Growth 24Conversion 8Competition 7Returns 13Price range 10Avg price 19Brand share 0Review moat 69Quality gap 96
**Quality gap**
**Incredible****3.9★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****747.29**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-2.5%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****$378.49**
avg listing price — sweet spot $15–$100
**Market size**
**Bad****$51K**
$51K/yr · 20K searches
**Returns**
**Bad****8.5%**
return rate — above 5% kills the launch gate
**Price range**
**Bad****$49.64–$565.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Bad****0.7%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Bad****91%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, phyn smart water sensor is a $51K/yr Amazon United States market (20K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 23/100.
Data updated Jul 30, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **phyn smart water sensor market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$189K–$284K**
- units × avg price
- **Conversion rate**
- **0.7%**
- **Avg BSR**
- **#136**
- **Page quality**
- **0%**
- **Prime**
- **86%**
- **Sponsored**
- **57%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **33 months**
- **Avg seller age**
- **153 days**
## **Competition & brand share**
The top 5 products capture 91% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **▼falling
**Sellers**
**32**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**91%**
Top 20: 100%
**Open market**
**0%**
- Phyn77% - Moen14% - FRIZZLIFE9% - Open — no brand owns it (0%)
## **Demand**
Weekly Amazon search volume, last 20 weeks — -2.5% search growth over the last 90 days.
500300Spike '26Mar '26Apr '26Apr '26May '26Jun '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/phyn-smart-water-sensor/trend)
## **Top phyn smart water sensor search terms**
- **phyn plus**8K/yr+9.8%1.7% conv. - **phyn smart water sensor**8K/yr-20.2%3.0% conv. - **phyn**4K/yr+5.4%1.6% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/phyn-smart-water-sensor/search-terms)
## **Top phyn smart water sensor 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%15%$8K30%$15K45%$23K60%$31K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Plus Smart Water Assistant & Shutoff (2nd Gen)**Phyn**$565.91**2.6★5 rev](https://www.amazon.com/dp/B0DZ9SBCPX) [2**Smart Water Sensor**Phyn**$49.64**4.5★33 rev](https://www.amazon.com/dp/B0DZ9KF6GW) [3**Moen Flo 3/4-inch Smart Water Shut Off Valve Smart Home Water Monitor Leak Detector Wifi Connected App Enabled Flow Meter and Shutoff 900-001**Moen**$501.07**4.0★2,266 rev](https://www.amazon.com/dp/B00C03D01Q) [4**Moen Flo 1-inch Smart Water Shut Off Valve Smart Home Water Monitor Leak Detector Wifi Connected App Enabled Flow Meter and Shutoff 900-006**Moen**$537.26**4.0★2,266 rev](https://www.amazon.com/dp/B081HT5LD6) [5**Frizzlife LP365-P Smart Water Monitor and Automatic Shutoff - 0.01 GPM Ultrasonic Micro Leak Detection Wi-Fi / APP Control Pressure+Flow Monitoring 24/7 Water Usage Reports Fits 3/4 and 1**FRIZZLIFE**$333.35**4.5★308 rev](https://www.amazon.com/dp/B0FSZ1K7F4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Smart Water Sensor**Phyn**$49.64**33 rev8mo ago](https://www.amazon.com/dp/B0DZ9KF6GW) [**Frizzlife LP365-P Smart Water Monitor and Automatic Shutoff - 0.01 GPM Ultrasonic Micro Leak Detection Wi-Fi / APP Control Pressure+Flow Monitoring 24/7 Water Usage Reports Fits 3/4 and 1**FRIZZLIFE**$333.35**308 rev10mo ago](https://www.amazon.com/dp/B0FSZ1K7F4) [**Plus Smart Water Assistant & Shutoff (2nd Gen)**Phyn**$565.91**5 rev11mo ago](https://www.amazon.com/dp/B0DZ9SBCPX) [**Frizzlife LP365 Smart Water Monitor and Automatic Shutoff Valve - 0.01GPM Ultrasonic Micro Leak Detection APP Wi-Fi Remote Control Real-Time Flow/Temp Alarm 24/7 Water Usage Reports 3/4 and 1**FRIZZLIFE**$292.80**308 rev1y ago](https://www.amazon.com/dp/B0DSKG73XB) [**Phyn Smart Water Assistant: DIY-Installed Smart Home Water Usage Monitor & Leak Detector (Compatible with Alexa)**Phyn**$369.42**45 rev6y ago](https://www.amazon.com/dp/B0851LY41C)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Frizzlife LP365-P Smart Water Monitor and Automatic Shutoff - 0.01 GPM Ultrasonic Micro Leak Detection Wi-Fi / APP Control Pressure+Flow Monitoring 24/7 Water Usage Reports Fits 3/4 and 1**FRIZZLIFE**$333.35**4.5★**▲ 123%**](https://www.amazon.com/dp/B0FSZ1K7F4) [**Moen Flo 3/4-inch Smart Water Shut Off Valve Smart Home Water Monitor Leak Detector Wifi Connected App Enabled Flow Meter and Shutoff 900-001**Moen**$501.07**4.0★**▲ 28%**](https://www.amazon.com/dp/B00C03D01Q) [**Plus Smart Water Assistant & Shutoff (2nd Gen)**Phyn**$565.91**2.6★**▲ 15%**](https://www.amazon.com/dp/B0DZ9SBCPX) [**Smart Water Sensor**Phyn**$49.64**4.5★**— 1%**](https://www.amazon.com/dp/B0DZ9KF6GW) [**Moen Flo 1-inch Smart Water Shut Off Valve Smart Home Water Monitor Leak Detector Wifi Connected App Enabled Flow Meter and Shutoff 900-006**Moen**$537.26**4.0★**▼ 37%**](https://www.amazon.com/dp/B081HT5LD6)
**~~View all trending →~~**
## **What buyers say about phyn smart water sensor**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**14%
*“installation went well”*
**Quality-Overall**14%
*“High quality”*
**Value For Money**9%
*“Good value”*
**Ease Of Use**7%
*“Easy peasy”*
**Efficiency**5%
*“Does the job”*
**Sensor**5%
*“This sensor gives me peace of mind”*
**Connectivity-Overall**4%
*“They each remain connected well”*
**Alarm/Timer Accuracy**3%
*“In testing, the system responded quickly to abnormal flow patterns and provided timely alerts through the mobile app”*
**Water Flow**3%
*“I like being able to check the status of my home's water system from anywhere”*
**Leak-Proof**2%
*“I love that this can sense a leak”*
### **What buyers complain about **
**Leak-Proof**21%
*“Had a leak”*
**Value For Money**11%
*“it appears youll be paying just as much if not more for this product”*
**Functionality-Overall**6%
*“Oh and once the water is turned off you can't turn it back on from the app”*
**Water Resistance**6%
*“not allow any water to pass to the home”*
**Connectivity-Overall**6%
*“Terrible WiFi connection”*
**Alarm/Timer Accuracy**5%
*“That means I don't get alerts”*
**Quality-Overall**4%
*“Garbage”*
**Assembly/Installation**3%
*“Expensive to buy & install,”*
**Noise Level**2%
*“however I don't believe the device alarm is loud enough if it were located in a basement or attic to be heard on the floor above or below”*
**Spray/Flow**2%
*“Though the loss of water was minimal because of the spray attachment was off”*
### **Top return reasons **
**Size-Overall**42%
**Value For Money**10%
**Connectivity-Overall**7%
**Assembly/Installation**7%
**Compatibility-Overall**7%
**Defective Material/Parts**6%
**Functionality-Overall**5%
**Advertised Vs Actual Product**5%
**Leak-Proof**4%
**Product Condition**2%
## **Common questions**
- **Is phyn smart water sensor profitable to sell on Amazon United States?**
- The niche generates $51K/yr across 7 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -2.5%. Flapen's verdict: Skip it (23/100).
- **How competitive is the phyn smart water sensor niche?**
- 3 brands and 32 sellers compete. The top 5 products take 91% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in phyn smart water sensor?**
- Top complaints mined from reviews: Leak-Proof, Value For Money, Functionality-Overall. The return rate is 8.5% — above our launch gate.
- **What does it cost to enter the phyn smart water sensor niche?**
- Listings span $49.64–$565.91; the average listing price is $378.49 (sweet spot $15–$100). The average incumbent carries 747 reviews — the moat a new listing must climb.
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