10 Best Smart Pool Monitor of 2025

Tested and Reviewed: Top 10 Smart Pool Monitor deals with expert ratings from 8.1 to a perfect 10

May 2025 Edition

Editor's Choice

9.7

Sutro

Sutro Pool & Spa Water Smart Monitoring Device | Tests Alkalinity, pH, Chlorine | Digital Water Tester

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Editor's bottom line:

“This smart pool monitor is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

SMART POOL MONITORING MADE EASY: The Sutro Smart Pool Monitor simplifies pool and spa maintenance by automatically testing your waters pH, free chlorine, bromine (for spas), and alkalinity. Get real-time updates and customized treatment recommendations directly to your phone via the Sutro App.
COMPLETE SYSTEM FOR YOUR POOL OR SPA: Includes (1) Sutro Monitor (floats in your pool or spa), (1) Water test cartridge, (2) Rechargeable Li-Ion batteries, (1) Hub with charger base (extends range inside your home), and (1) US-110V adapter.
COMPATIBLE WITH ALL POOL TYPES: Ideal for chlorine, saltwater, bromine, mineral, ozone, and UV pools and hot tubs.
ACCURATE READINGS, ANYWHERE: Receive precise water chemistry readings straight to your smartphone, even when you're away. Keep your water balanced, clean, and swim-ready with minimal effort.
FLEXIBLE SUBSCRIPTION OPTIONS: After purchase, download the Sutro App (iOS or Android) and choose between our Basic Plan ($29/month) or Premium Plan ($39/month), which includes VIP support and an optional monthly consultation to optimize your pool care.

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Picked by 169 people today

9.5

Crystal Water Monitor

Crystal Smart Water Monitor for Chlorine & Bromine Pools, Hot Tubs & Swim Spas - 24/7 Continuous Digital Water Testing with App Notifications & Customized Chemical Dosing (New Model)

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Main Highlights

SIMPLIFIED POOL & HOT TUB CARE: The Crystal Smart Water Monitor actively tests your pool or hot tub's water 1,000 times per week to give you personalized chemical recommendations that are much more reliable than any single point-in-time sample of water or a test strip reading. It's as simple as monitor, notify, and adjust.
AUTOMATIC NOTIFICATIONS: The Crystal Water Monitor app automatically alerts you when you need to adjust your chemicals and provides precise chemical dosing recommendations customized for your pool or hot tub. Works with both Android and iOS.
TAKES GUESSWORK OUT OF ADDING CHEMICALS: Scan your chemicals barcode once, and the Crystal Water Monitor app will customize your chemical dosing recommendations for your preferred chemical brand. Supports all major chemical brands.
SUPPORTS CHLORINE & BROMINE WATER TYPES: Works with chlorine and bromine pools, hot tubs and swim spas. Saltwater version also available.
THE CRYSTAL CLEAR CHOICE: While other smart monitors only sample your water once a day, Crystal continuously monitors it 144x a day providing the most accurate readings and dosing recommendations. Enjoy the freedom to use any of your preferred chemical brands instead of being forced to use proprietary ones. Say goodbye to expensive monthly replacement cartridge purchases competitive monitors require. Upgrade from confusing and inaccurate test strips with precise digital testing and save time constantly taking individual water samples to your pool store.
RELIABLE SERVICE & SUPPORT: Complimentary first-year service and US based customer support with your Crystal Water Monitor. Renew for $99/year thereafter to continue to receive ongoing notifications, chemical dosing, service, support, and free replacement parts.

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9.5

WaterGuru

Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More

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Main Highlights

Your Smart Pool Solution - Our smart pool monitor balances your pool perfectly and saves you money on energy bills and over-treating. Discover how Water Guru Sense 2 delivers worry-free pool care in the palm of your hand, no manual water testing is required.
Easily Monitor Your Pool - Pool water can be deceptive. You need a digital pool water tester that reveals the unseen truth. The Water Guru Sense 2 comes with a patented optical sensor, a laminated-glass strip, and an integrated flow sensor for effortless pool testing.
Simplified Pool Care System - This smart device is an efficient pool chemical monitoring system that gives you precise pool water test readings. By accurately testing water quality, you can enjoy a pristine, clear, and balanced pool, ready for family, friends, and even pets to enjoy.
Get Expert Pool Advice - This is not like your ordinary pool test kit. The Water Guru Sense 2 also gives expert advice based on the precise data of your pool's chemical composition, size, and type.
Sense S2 Inclusions - Utilize everything you need for an optimal pool monitoring system. With saltwater compatibility, the WaterGuru SENSE S2 comes with the SENSE S2 C5 Cassette, 4 C Batteries, Float Ring for Spas and Above Ground Pools, and a Quick Start Guide.
Exclusive Compatibility - The WaterGuru SENSE S2 is compatible only with the WaterGuru SENSE S2 C5 Cassette (included with purchases), which measures Free Chlorine (FC), acidity (pH), Total Alkalinity (TA), Cyanuric Acid (CYA), and Calcium Hardness (CH). The C5 Cassette is designed to last 1 month based on daily water measurements. Alternatively, the S2 can use the SENSE S2 C2 Cassette, which measures Free Chlorine (FC) and acidity (pH) and lasts 2 months with daily water measurements.

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9.2

iopool.com

iopool Smart Water Monitor - Works for Chlorine & Bromine Pools, Hot Tubs, & Swim Spas - Gives Precise Dosage recommendations. !

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Main Highlights

Compatible with Chlorine, Bromine and Active Oxygen
Not Compatible with Salt water
Real-time analysis of your pool water. iopool advises you on the precise treatments to be carried out to have a safe and clear water continuously.
Guided pool care: iopool guides you through all the steps of the maintenance process to ensure safe and clear water for you and your family. You can also receive personalized alerts based on the actions to be taken.
App: Get access to the evolution of your water over time through the history feature. Share the iopool app with your neighbor when you are on vacation!
Eco Start pack: EcO probe + Bluetooth Wi-Fi Gateway + Unlimited and complete access to the app for life
EcO must always remain submerged in water. Prolonged exposure to air can damage the sensors.
Incompatible with salt-treated pools/spas. For this type of treatment, please consider EcO Start Salt + connect.
Replacement battery

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9.0

YINMIK

YINMIK pH Pool Monitor, Smart pH and Chlorine Tester for Swimming Pool, Salt Water Pool 7 in 1 pH Chlorine Salinity ORP EC TDS Temp Monitor for Inground Pool, Above Ground Pool, Spa, Hot Tub

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Main Highlights

pH Salt Tester for Saltwater Pool: YK-S03 greatly facilitates you to confirm the pH and salinity (ppm) level in the current pool when start using the salt chlorinator generator; Also work for weekly salt check, to ensure chlorinator running well, balance the salt, chlorine and pH level. Good helper for salt water pool
Free Chlorine and pH Tester: Recommends pH 7.2-7.8pH and free chlorine concentration of 1-3mg/L in pools; YINMIK pH and chlorine monitor can test both the free chlorine and pH, to know both levels are in the optimum range for clear pool
Anytime, Anywhere: Wireless connection. After the pH and salinity tester is connected to your smartphone, open the Tuya APP, can view real-time swimming pool data anytime and anywhere (APP is free)
Multifunctional 7 in 1 Pool Monitor: Monitor the pH, ORP, Salinity, Chlorine, EC, TDS, Temp value. Range: pH(0.0-14.0pH), Salinity (0-9990ppm), ORP(-999~+999mV), CL(0.0-4.0mg/L), EC(0-9990S/cm, 10.01-19.99mS/cm), TDS(0-9990ppm), Temperature(32.0-122.0); Professional pH ORP CL Salt tester for swimming pool, Above Ground Pool, Inground Pool, inflatable pool, Saltwater Pool, Chlorinated Pool, Spa, Hot Tub
Other Design you Need: Support solar charging and USB charging (very convenient for outdoor backyard pool); Floating design, Floating in the water; Support 2.4GHz WiFi connection; Easy to calibrate in the app. Packing List: Monitor; Tuya Gateway; pH Calibration Solution; Salt Calibration Solution; ORP Calibration Solution; Manual; Wrench; Measuring Cup

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Best Value

8.8

Save 23%

poolrx

PoolRX+ pool unit 7.5k-20k gallons

23% OffFree Shipping

Main Highlights

Eliminates all types of Pool Algae
Reduces chemical demand
Effective for up to 6 Months
NSF/ANSI 50 Certified
Ideal for Chlorine, Salt, UV or Ozone systems
New formula now with 3 Active Ingredients

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8.6

kactoily

Kactoily Pool Monitor Floating Wireless Pool Water Testing Smart Pool Device 4-in-1 pH/EC/TDS/Temp Digital Pool Water Tester for Pool & Hot Tub & SPA

Main Highlights

Long-Distance Monitoring: With display and probe distances of up to 980 feet. You can place the display in your living room or bedroom to check the indicators of your pool water.
4-in-1 Smart Pool Monitoring: Save time and effort with our 4-in-1 monitoring system, which measures pH, EC, TDS, and temperature of any swimming pool or spa. Perfect for in-ground or above-ground pools and hot tubs.
Cutting-edge Probe Technology: Our probes have been continually enhanced to deliver precise and stable data on swimming pool water quality (Please ensure to replace the protective caps from probes before use).
Waterproof Design: The pool water quality monitor's probe boasts an IP68 waterproof rating, ensuring it can be fully submerged in water for long periods (tighten cover as per instructions). Note that the display is not waterproof, so keep it away from water!
Power Supply: The display requires a USB Typec-c cable. The Probe needs 3*AAA batteries (Battery not included) for 1-3 months, the battery level of the probe is shown in the upper right corner of the display.

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8.3

Save 17%

GoveeLife

GoveeLife Smart Pool Thermometer with WiFi Gateway, Digital Swimming Water Thermometer Temperature Monitor with IPX7 Waterproof, Remote App Notification Alert for Ice Bath Tub, Fishbowl, Pond, Hot Tub

17% OffFree Shipping

Main Highlights

Smart Remote Monitoring: With a connected 433 gateway (up to 328ft /100m), you can easily monitor your water temperature data in real time from anywhere with the App. The Wi-Fi gateway can be paired with up to 10 sensors, extending your monitoring range to any location indoor and outdoor.
More Accurate: The pool thermometer sensor can detect temperatures ranging from -4°F to 158°F, can accurately detect the temperature change of ±0.9°F, refresh speed up to 2S, double-click the internal button to switch °F/°C.
IPX7 Waterproof Protection: The GoveeLife Pool Thermometer is waterproof and can accurately measure temperature even when entering the water. You don't have to worry about water damaging it at all.
Free Date Storage & Export: The GoveeLife pool temperature monitor supports online viewing of 20-day data graphs and export of data recorded over the past 2 years. Ideal for swimming pools, paddling pools, hot tubs, fish ponds, jacuzzis, spas, etc.
Long-Lasting: The pool thermometer is powered by 2 AAA batteries, divided into standard mode and powersaving mode. Battery life is 1 year in standard mode and 3 years in powersaving mode (APP setting). When the battery is low, an alert icon appears on the screen and the app will also send a low battery notification. The product can also be linked to GoveeLife's wallsocket products to automatically turn the pool heat on and off.
Easy to Use and Install: The GoveeLife Pool Thermometer also comes with a rope to prevent the pool thermometer from floating away while taking readings! Need attention: The included orange loop rubber is replaceable to make the pool thermometer stand out on the water!
Need attention: It is better not to have obstacles between the gateway and the sub-device, otherwise it may affect the stability of signal transmission.(2.4Ghz WiFi Only)

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8.1

Save 8%

EASYTEST

EASYTEST 7-Way Pool Test Strips, 150 Strips Water Chemical Testing for Hot tub and Spa, Accurate Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine

8% OffFree Shipping

Main Highlights

AFFORDABLE 150 STRIPS: This water chemical testing kit contains 150 test strips. Enough balanced for your swimming pool, hot tub, spa and other water testing. At least testing twice a week is recommended to keep your pool sparkling clean and safe.
ACCURATE AND FAST TESTING: Just soak in water for 1 seconds; Then take it out,no need to shake excess water off and hold the test strip horizontally for 15 seconds; Compare with the color chart on the bottle to obtain clear and accurate water quality results.
7 IN 1 POOL TEST KIT: Test all necessary parameters for your swimming pool at 1 time, such as Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine. Check water quality at any time you want.
HIGH ACCURACY POOL TESTING STRIPS: High-quality fiber paper and no-bleeding pads selected after repeated trials by R&D personnel. No need to shake off excess water and follow the instructions easily, you will to get the accurate results.
TIPS FOR ACCURATE RESULTS: Keep wet fingers away from the strips. Read under natural daylight for best results.Store in a cool dry place.The expiration is 2 years from manufacture. Once opened, use up in 90 days.

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8.1

JNW Direct

7-Way Pool Test Strips, 100 Quick & Accurate Pool and Spa Test Strips, Pool Water Test Kit - Chlorine, Bromine, pH, Hardness, Alkalinity, Pool Water Tests, Spa and Hot Tub Test Strips with Ebook - JNW

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Main Highlights

AFFORDABLE 7-IN-1 POOL TESTING KIT: Our 100 pool test strips provides an affordable, all in one pool water testing kit for various chemicals including Free Chlorine, Alkalinity, pH levels and more!
QUICK & EASY: Simplify your pool and spa testing with our easy pool testing strips. Just dip our hot tub test strips into the water for 2 seconds, wait for 30 seconds, and compare the results accurately to the provided color chart.
ACCURATE & RELIABLE: Our swimming pool test strips deliver highly precise readings, ensuring the safety and cleanliness of your pool or hot tub water. Utilize our pool strips at least twice a week for optimal maintenance.
FREE E-BOOK: Gain access to valuable insights and tips on using our pool and spa test strips and maintaining balanced chemical levels with our complimentary eBook, enhancing your pool testing experience.
TIPS FOR USAGE: Ensure the longevity and effectiveness of your pool test strips by keeping them away from moisture and light, securely closing the container after use, and using them within 90 days of opening.

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Our Best Overall Choice

Best Choice

9.7

Sutro

Sutro Pool & Spa Water Smart Monitoring Device | Tests Alkalinity, pH, Chlorine | Digital Water Tester

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

SMART POOL MONITORING MADE EASY: The Sutro Smart Pool Monitor simplifies pool and spa maintenance by automatically testing your waters pH, free chlorine, bromine (for spas), and alkalinity. Get real-time updates and customized treatment recommendations directly to your phone via the Sutro App.
COMPLETE SYSTEM FOR YOUR POOL OR SPA: Includes (1) Sutro Monitor (floats in your pool or spa), (1) Water test cartridge, (2) Rechargeable Li-Ion batteries, (1) Hub with charger base (extends range inside your home), and (1) US-110V adapter.
COMPATIBLE WITH ALL POOL TYPES: Ideal for chlorine, saltwater, bromine, mineral, ozone, and UV pools and hot tubs.
ACCURATE READINGS, ANYWHERE: Receive precise water chemistry readings straight to your smartphone, even when you're away. Keep your water balanced, clean, and swim-ready with minimal effort.
FLEXIBLE SUBSCRIPTION OPTIONS: After purchase, download the Sutro App (iOS or Android) and choose between our Basic Plan ($29/month) or Premium Plan ($39/month), which includes VIP support and an optional monthly consultation to optimize your pool care.

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