Comparison

HTH™ | Test to Swim™ vs Pooli

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HTH™ | Test to Swim™

This app helps pool and spa owners maintain water quality by analyzing test strip results. It provides instant recommendations, step-by-step instructions, and access to helpful resources for clear and balanced water.

Highlights
  • Scan test strips with Google Cloud Vision
  • Interactive spa test strip matching
  • Instant water balance recommendations
  • Save test history
  • Pool and spa care resource library
  • Retail product locator
Features
Read full description

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 hthpools.com

About

Pooli

This app helps you maintain a clean and safe pool or spa with smart testing, tailored advice, and customized task lists. It offers advanced AI for instant feedback, problem resolution guidance, and comprehensive sanitization support. Track multiple pools, manage inventory, and even collaborate with others for effortless pool care.

Highlights
  • Smart water testing with manual entry or strip scanning
  • Interactive Calcite Saturation Index (CSI) tool
  • Tailored reports and expert maintenance advice
  • Advanced AI for instant pool questions
  • Customized task lists and reminders
  • Multi-pool and spa management
  • Chemical inventory tracking with restock reminders
Features
Read full description

Embark on your pool care journey with Pooli, the comprehensive, user-friendly app that transforms every user into a pool care expert. With a range of high-value features, Pooli ensures safe, clean, and enjoyable swimming all year round. Top Features: 1. Smart Testing: Use your favorite water test method and open the Pooli app. Manually enter the results or join the Pool Club to scan your test strip with your phone's camera. 2. Interactive CSI Tool: Utilize our interactive Calcite Saturation Index (CSI) tool for understanding and preventing potential issues. 3. Tailored Reports & Advice: Receive detailed pool water quality reports and expert maintenance advice catered to your pool size and type. 4. Advanced AI: Get instant feedback on your pool questions with our cutting-edge AI system. 5. Customized Task Lists: Enjoy tailored task lists, reminders, and user-defined water chemistry targets specific to your pool or spa needs. 6. Multi-Pool Management: Effortlessly track and manage multiple pools or spas. 7. Problem Resolution: Get guidance for identifying and resolving pool issues. 8. Comprehensive Sanitization Support: Support for all primary sanitization methods, complete with custom targets, dosages, and recommendations. 9. Analysis Tools: Use our tools to graph and analyze chemical levels and usage over time, calculate actual chemical demand, and optimize shock/sanitization schedules. 10. Chemical Atlas & Shop: Access our integrated atlas of chemicals and solutions, along with a shop for discounted testing and equipment. 11. Collaborative Tools: Team up with service providers or family members on pool maintenance. 12. Record Keeping: Maintain complete records of pool water tests and maintenance tasks and equipment readings. 13. Inventory Tracking and Sharing: Keep track of your chemical, equipment, and supply inventory with restock reminders. 14. Customizable Profiles: Share your pool and spa information through customizable user profiles. 15. Cost Calculators: Track your savings on chemicals and equipment, and monitor water consumption and potential leaks. 16. Gamified Experience: Have fun with pool care through our monthly high scores and achievement badges. 17. Offline Functionality: Access key features and information even without an internet connection. How Pooli Works: Using Pooli is as easy as a few taps on your screen. Simply open the app, use a test your pool water, and input the results manually or via Pooli's simple and accurate test strip scanning technology. Pooli then provides you with a detailed report and expert advice on maintaining your pool. You'll get customized task lists and reminders based on your pool's specific needs. Pooli even offers a collaborative feature to work with service providers or family members on pool maintenance. With Pooli, pool care becomes a breeze! Experience peace of mind knowing you're maintaining safe and clean water. Dive into a better pool care experience with Pooli today!

Screenshots

HTH™ | Test to Swim™4 screens
Pooli4 screens

Verdict

The call

HTH™ | Test to Swim™ and Pooli both sit at 4.7 stars, but that hides the real split: 87% of Pooli's written reviews are positive against 24% of HTH™ | Test to Swim™'s. Pooli also leads on update cadence (every 2 weeks vs monthly). HTH™ | Test to Swim™'s advantage is ratings volume (4.2K vs 370). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for HTH™ | Test to Swim™ against 4.6 for Pooli. That said, the two scores are not equally well evidenced: HTH™ | Test to Swim™ has 4.2K ratings behind it against 370, so its average is the more settled of the two. Written reviews are what separate them: 24% of HTH™ | Test to Swim™'s written reviews are positive against 87% of Pooli's.

UpkeepUpdate frequency

HTH™ | Test to Swim™ ships an update monthly, Pooli every 2 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
HTH™ | Test to Swim™ versus Pooli: the parameters behind the verdict, then further details
ParameterHTH™ | Test to Swim™Pooli
PriceFreeFree
Rating4.7 (4.2K ratings) — better4.6 (370 ratings)
Positive reviews23.9% of reviews86.7% of reviews — better
Number of ratings4.2K — better370
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.0
Further details — not scored
Size55 MB124 MB
Age rating4+4+
DeveloperSolenis, LLCPooli, Inc.

Customer experience

HTH™ | Test to Swim™

All ratings4,010 ratings
Positive92.1%
Neutral3.0%
Negative4.9%
Written reviews184 reviews
Positive23.9%
Neutral3.8%
Negative72.3%

Pooli

All ratings370 ratings
Positive90.3%
Neutral3.0%
Negative6.8%
Written reviews150 reviews
Positive86.7%
Neutral3.3%
Negative10.0%

User reviews

HTH™ | Test to Swim™

From 4.2K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Helpful guidance
  • 💡 Tracks water testing history

Room to improve

  • 🐛 Inconsistent and inaccurate results
  • 🤖 Poor camera/scanning functionality
  • 🤔 Requires too much personal information
  • 🚫 Doesn't work for all pool types

Pooli

From 370 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Helpful for maintaining pool/spa
  • 💡 Customizable features
  • 👍 Accurate water chemistry calculations
  • 👍 Useful reminders and tracking

Room to improve

  • 🐛 Inconsistent test strip scanning
  • 💰 Expensive subscription model
  • 🔍 Limited free features
  • 🐛 Bugs and glitches in the app

Bugs and requests

HTH™ | Test to Swim™

Reported bugs

3 issues
  • Registration and login issues
  • Crashing and freezing
  • Incompatible with certain devices

Requested features

3 requests
  • Ability to manually enter test results
  • More customization for pool size/type
  • Improved accuracy and consistency

Pooli

Reported bugs

2 issues
  • Inventory management issues
  • Reminders triggering at inconvenient times

Requested features

4 requests
  • Ability to add equipment details and service history
  • Integration with calendar apps for reminders
  • More customization options for ideal water levels
  • Improved test strip scanning accuracy

In-app purchases

None

HTH™ | Test to Swim™

No in-app purchases

None

Pooli

No in-app purchases

Questions

Is HTH™ | Test to Swim™ free?
HTH™ | Test to Swim™ is free to download, with no in-app purchases.
Is Pooli free?
Pooli is free to download, with no in-app purchases.
Which has better reviews, HTH™ | Test to Swim™ or Pooli?
HTH™ | Test to Swim™ is rated higher. HTH™ | Test to Swim™ averages 4.7 out of 5 from 4.2K ratings, while Pooli averages 4.6 from 370 ratings.
Do HTH™ | Test to Swim™ or Pooli have ads?
Neither HTH™ | Test to Swim™ nor Pooli shows ads.
Which is updated more often, HTH™ | Test to Swim™ or Pooli?
HTH™ | Test to Swim™ ships an update monthly, and Pooli every 2 weeks. Most recently, HTH™ | Test to Swim™ was updated on November 6, 2026 and Pooli on November 3, 2026.

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