# HTH™ \| Test to Swim™ — Pool & Spa Water Testing

> Pool and spa water testing analysis and care recommendations. (iPhone/iPad app by Solenis, LLC.)

- Source: https://appshunter.io/ios/app/hth-test-to-swim/id643360256 (this page in markdown: same URL + `.md`)
- Developer: [Solenis, LLC](https://appshunter.io/developer/1677207377)
- Category: Utilities, Lifestyle
- Price: Free
- Rating: 4.47/5 from 1,212 App Store ratings · 180 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 55 MB
- Languages: English
- Released: 2013-05-08
- Data updated: 2026-08-30
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/hth-test-to-swim/id643360256/reviews.md

## What is HTH™ | Test to Swim™?

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

## Key features

- 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

## What do users think of HTH™ | Test to Swim™?

Overall sentiment: negative

**Pros**

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

**Cons**

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

**Commonly reported bugs**

- Registration and login issues
- Crashing and freezing
- Incompatible with certain devices

**Most requested features**

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

## Recent user reviews (10 of 180)

All indexed reviews: https://appshunter.io/ios/app/hth-test-to-swim/id643360256/reviews.md

### 5/5 — Best Summer Ever

*2026-08-17, version 5.4.9*

There was no guessing with this app and the test strips!  I tested it each week took the picture with app and followed the instructions. It was perfect 1 2 3 done.  Least amount of stress, money and headache- you have to use this if you have a pool!

### 5/5 — Takes the quess work out.

*2026-08-15, version 5.4.9*

I’m a bit colorblind, especially when the hues are faint. The app scan feature makes it easy. Just make sure you scan it as close to 20 seconds as possible.

### 1/5 — Scam

*2026-08-15, version 5.4.9*

Got my email and phone then locked me out. Immediately started getting endless calls and emails. DON’T GIVE THEM YOUR INFORMATION.

### 5/5 — First test

*2026-08-12, version 5.4.9*

Amazingly easy
Can test at will now with confidence

### 2/5 — Strip inaccuracies

*2026-08-12, version 5.4.9*

Take one stip out get one reading, take a second one out and get a hole different reading

### 1/5 — Do not waste your money

*2026-07-26, version 5.4.9*

The scanning of the test strip does NOT work no matter how you align the strip. Also, very difficult to manually ise the strip as the colors are very hard to match. I ended up taking my water to our local pool company and having an analysis. Turns out I didn’t need half the chemicals this app was trying to sell me.

### 4/5 — Let me choose my camera lense

*2026-07-23, version 5.4.9*

Only chooses .5 lens so I have a difficult time zooming in on the test strip.

### 1/5 — Dimensions

*2026-07-20, version 5.4.9*

We need an option to enter how many gallons the pool holds and not dimensions. I have an 18 foot round pool. When I enter this in, your app says my pool holds 8429 gallons.

### 5/5 — Test strips

*2026-07-19, version 5.4.9*

This is my second time using the test strips. First time was a few days after initial shock treatment. This seems like the best way to go instead of all the fancy devices out there.  I will take a sample water to get tested independently just to verify accuracy. I’ll report back.

### 4/5 — Reading is wrong sometimes

*2026-07-18, version 5.4.9*

Taking pictures and sending it sometimes doesn’t match the bottle

## Frequently asked questions about HTH™ | Test to Swim™

### What does the HTH™ Test to Swim™ app do?

The HTH™ Test to Swim™ app analyzes your pool or spa water test strip results using advanced technology. It provides instant recommendations and step-by-step instructions to help you maintain balanced and clear water, making pool and spa care easier.

### How does the app analyze test strips?

The app utilizes Google Cloud Vision Technology to scan your HTH™ Pool Care 6-Way Test Strips, offering more accurate results. For spa owners, it features an interactive chart to match HTH spa™ Test Strips for quick and precise readings.

### Is the HTH™ Test to Swim™ app free to use?

The app itself is free to download and use for analyzing test strips and accessing care recommendations. However, it is designed to work with HTH™ pool and spa test strips, which are purchased separately. The app may also feature ads.

### What kind of recommendations does the app provide?

Based on your test strip results, the app provides instant solutions and product recommendations from HTH™ pool & spa care experts. These recommendations are designed to help you balance your pool water and address specific water care issues.

### Can I track my pool's water history with this app?

Yes, by creating a myHTH account, you can save your water test history. This allows for easy comparison over time and helps you keep track of your pool or spa's water quality trends and maintenance needs.

## Version history (last 5 releases)

### 5.4.9 — 2026-07-06

General updates

### 5.4.8 — 2026-03-09

General updates

### 5.4.7 — 2026-02-25

General updates

### 5.4.6 — 2025-11-06

General updates

### 5.4.5 — 2025-10-14

General update and camera improvements

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## More apps by Solenis, LLC

- [GuardTec Firmware Updater](https://appshunter.io/ios/app/guardtec-firmware-updater/id6743706598)

All apps by Solenis, LLC: https://appshunter.io/developer/1677207377

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*