HTH™ | Test to Swim‪™‬ 4+

Pool & Spa Water Testing

Solenis, LLC

Designed for iPad

    • 3.1 • 37 Ratings
    • Free



HTH™ Test to Swim™ pool water testing app is your partner in DIY pool and spa water care and essential to your weekly water care routine. Our new and improved HTH™ Pools App includes exciting new features, this powerful app works seamlessly with HTH™ Pool Care 6-Way Test Strips, now with more accurate results from Google Cloud Vision Technology. The app also includes new features for spa owners, including HTH spa™ Test Strips matching.

With our innovative products and resources, HTH™ Pool Care is on a mission to help you minimize the unpredictability in pool and spa water care. Spend less time guessing and more time splashing in brilliantly clear water with HTH™!

• Easily scan your HTH™ Pool Care 6-Way Test Strips within the app, now with more accurate results from Google Cloud Vision Technology
• Use the interactive chart to match your HTH spa™ Test Strips and get quick, accurate results and recommendations
• Receive instant solutions, step-by-step instructions and product recommendations to balance your pool water from HTH™ pool & spa care experts
• Create a myHTH account to save your water test history for easy comparison and keep track of your favorite HTH™ pool and spa products for easy reference
• Access a library of pool and spa care resources, including how-to videos, on everything from regular maintenance to solutions for specific pool and spa problems
• Find HTH™ pool and spa products near you with our retail locator
• The app supports U.S. pool and spa owners

For more information, visit

What’s New

Version 5.0.16

Bug fixes and improvements

Ratings and Reviews

3.1 out of 5
37 Ratings

37 Ratings

Nate Supreme ,


Coming from somebody who never tested their water, and only used chlorine and hoped for the best; this is a pretty decent product. Especially when used with the app that literally tells you what you need and don’t need to add along with the amount to add. I seen a review that said when they plug in the six colors into the app it never comes out right. That might be because the order of colors on the app aren’t the same as on the back of the container that holds the test strips. It seems like the PH square and the total hardness square are flip-flopped. Which isn’t a real big deal if you can see colors.. but if you’re colorblind, I totally get it.

gmaclr ,

Great customer service

Worked with customer service on chat because I couldn’t see test history. They asked if I was Saving the test results. I didn’t realize there is a big red button at the bottom to save results. I felt like an idiot but they were very nice and helpful.

rednebmb ,

Essential for color blindness !

I have trouble distinguishing shades of some colors, so having an app like this is a huge help for me. I like the way the app allows you to keep a record of your tests. If a test is out of arrange, I like the way it gives you a recommendation of what to add and in what quantities. Be sure to set up an account and take the time to input your pool dimensions.

One wish: I have a salt pool and I wish the test also gave me a salt level reading.

App Privacy

The developer, Solenis, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Identifiers
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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