pHin Tests Water Chemistry Differently 


Traditionally, water chemistry is measured about one time per week. This certainly helps to monitor the health of your water, but at pHin, we have developed a smarter approach. pHin measures your vessels’ pH, sanitizer and temperature over 1000 times per week.


There are many environmental factors that affect water chemistry like: usage, weather, water temperature, sunlight exposure, etc. pHin’s built-in intelligence takes all of that collected information, analyzes it and then creates recommendations based on your pool or hot tub’s unique averages.


This means that pHin’s recommendations may be different from what you are used to or what your pool store recommends, but we find when customers follow our recommendations their pools are more likely to stay balanced.

We're all About Delivering Peace of Mind


Knowing your pool is healthy shouldn't require a chemistry degree.
The pHin App uses a simple color-changing disc to indicate your water quality.


We work tirelessly to ensure you have peace of mind knowing that your pool is “in the blue”. We guide you with scheduled actions to maintain a healthy pool or hot tub as well as recommended actions that are customized to your water’s unique chemistry.


Customers who have followed the guidance in the pHin app, report that their water has never looked clearer, nor has it been easier to maintain.

Automatic App Notifications


Relax and enjoy your water.


pHin will alert you when you need to adjust your chemicals and let you know exactly how much of which chemical to use.


Takes the Guesswork Out of Your Chemicals



Scan any supported chemical’s barcode and the pHin app will calculate exactly how much to add to your water.


You never need to worry about overchlorinated or out of balance water again.


pHin supports most major brands including:




View All Supported Chemicals


Includes 1-Year Monitoring Service

When you buy your pHin monitor, you get your first year of the pHin Monitoring Service for free. After the first year, the Monitoring Service costs $99 a year. The Monitoring Service includes:

  • Water history charts
  • Easy, accurate chemical dosing directions
  • Alerts for when attention is needed
  • Tests for total alkalinity, total hardness, and cyanuric acid monthly or as needed
  • Shareable water data for in-person help or to order new chemicals at your favorite pool store
  • Unlimited pHin monitor replacement warranty

pHin pool chemical monitor
Order pHin Today



For use with your own chemicals



Includes Free Shipping


 pHin Smart Monitor, Wireless Bridge, and Mobile App

 1 year Warranty*

 1 year Monitoring Subscription for alerts and chemical recommendations*
 Works with chlorine, bromine, and salt

 Works with all sizes of pools, hot tubs, and swim spas

Buy Now



*Monitoring Subscription is $99/year after the first year, and includes a 1 year warranty extension with each renewal