10 Best Pool Monitoring System of 2025

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

August 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 pool monitoring system 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 166 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

Pentair

Pentair EC-523317 IntelliConnect Pool Control and Monitoring System - Limited Warranty

Main Highlights

Controls up to 5 devices.
Operates any 2 on/off items for conventional lights, booster pumps, single-speed Pentair pumps, and other competitors models.
Works with an app for smart devices.
Enables seamless scheduling and rescheduling of heating or adjusting water temperature.
Compatible with IntelliFlo and IntelliPro Pumps, IntelliChlor or iChlor Sanitizers, and IntelliBrite LED Lights.

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9.2

Lifebuoy

BCONE® System Pool Alarm by Lifebuoy® | Certified ASTM F2208 Floating Pool Alarm | Loud Pool Safety Alarms on Home & Pool Units | Connects to Alexa | Pool Alarms for Inground Pools and Above-Ground

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Main Highlights

Pool owners need a floating pool alarm for inground pools and above-ground pools alike to make pools safer. This one is good for the job: NSF Certified for ASTM F2208
LOUD POOL ALARMS. Goes off on both the home, pool and app.
ADVANCED TECH. The child pool safety alarm is compatible with Alexa. The powerful ARM Processor ensures quick pool monitoring system performance.
USER-FRIENDLY APP. Connect up to 4 pool safety float pool units to a single home unit (for large or multiple pools). No subscriptions or hidden costs.
DURABLE AND RELIABLE. The BCONE is a part of Lifebuoy pool alarm system portfolio. This pool sensor alarm comes with a 3-year warranty. The kids pool alarm system is FCC & CE certified.
WATER FEATURES. Some water features create significant waves that may cause the alarm to go off. In some cases this could be avoided by locating the pool unit far from the water feature or scheduling the pump for night time and use "Do Not Disturb" scheduling on the app so that the Alarm will not sound at night time. Please reach out for more information about avoiding water feature causing false alarms.

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9.0

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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8.8

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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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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Best Value

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

Hofun

Pool Salt Tester & PH Meter, Hofun Digital Salinity Meter and PH Tester for Aquarium and Pool Saltwater Water, 5 in 1 Salinity PH Temp EC and TDS Meter, Aquarium Swimming Pool Hot Tub, High Accuracy

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Main Highlights

Wide Usage PH Meter Hofun ph meter is an essential tool to improve your life quality. This digital ph tester can be applied in the following applications,drinking water quality test, swimming pools quality monitor, PH balance measurement in RO/DI system, aquarium, spa, hot tub or hydroponics.
Three Display Designs for Salinity Test: PPM + PPT + %. For Swimming Pool Salt Test : 0-9999ppm; Seawater Test: 10-200ppt (1ppt=1000ppm, when ppm figure is over 9999ppm, the meter automatically changes to ppt ). For Food Test : 0.01-25%. So you dont have to calculate complex salt content level numbers between different units, which help you to avoid calculating mistake and also makes result-reading easier for you.
Easy Operation for Salinity Test: When you want to use our pool salt tester, all you need to do is to turn the meter ON and click MODE button to shift to SALINITY function. This easy and convenient operation design is very considerate and offers premium experience. Wide Application Salinity Meter: Hofun digital water salinity test meter applies for multiple uses, like salinity test for swimming pool, Koi Fish, Seawater, Aquariums & Marine Monitoring.
Reliable TDS Meter With Accurate & Quick Measurement Hofun digital ppm meter is equipped with premium quality titanium alloy probe, which enables quick and accurate water quality test. Our water quality tester is with 0-9999ppm & 0-200ppt wide test range ensures different function of usage.
Hofun Multiparameter water Test meter is equipped with 5 different functions for water quality test: Salinity + TDS + EC + pH + Temperature are combined perfectly in one meter. This is not only been convenient for your different water testing needs, but also saves your time and money, totally a helpful water test kit for your water quality safety.

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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

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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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