# HTH™ | Test to Swim™ vs Pooli

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.

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

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.

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.

## The numbers

| Metric | HTH™ | Test to Swim™ | Pooli |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4.2K ratings)](https://appshunter.io/ios/app/hth-test-to-swim/id643360256/reviews)** | [4.6 (370 ratings)](https://appshunter.io/ios/app/pooli/id1491565847/reviews) |
| Number of ratings | **4.2K** | 370 |
| Positive reviews | 23.9% of reviews | **86.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 55 MB | 124 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Solenis, LLC](https://appshunter.io/developer/1677207377) | [Pooli, Inc.](https://appshunter.io/developer/376941984) |

## What reviewers say

### HTH™ | Test to Swim™

[App page](https://appshunter.io/ios/app/hth-test-to-swim/id643360256)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

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


### Pooli

[App page](https://appshunter.io/ios/app/pooli/id1491565847)

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:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- Inventory management issues
- Reminders triggering at inconvenient times

**Requested features**

- 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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*