# H2OCHK Hayward vs Pooli

The clearest difference is review sentiment: Pooli at 87% against H2OCHK Hayward's 18%. Pooli also leads on rating (4.6 vs 3.0) and ads (none vs shown). H2OCHK Hayward's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (13.6 vs 16.0). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Pooli holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Pooli has 369 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 18% of H2OCHK Hayward's written reviews are positive against 87% of Pooli's.

H2OCHK Hayward ships an update monthly, Pooli every 2 weeks. The most recent releases landed on October 10, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | H2OCHK Hayward | Pooli |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/h2ochk-hayward/id1367373317/reviews) | **[4.6 (369 ratings)](https://appshunter.io/ios/app/pooli/id1491565847/reviews)** |
| Number of ratings | 4 | **369** |
| Positive reviews | 18.2% of reviews | **86.7% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 17 MB | 124 MB |
| Requires iOS | **13.6** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digital Concepts of Missouri, Inc.](https://appshunter.io/developer/1159162920) | [Pooli, Inc.](https://appshunter.io/developer/376941984) |

## What reviewers say

### H2OCHK Hayward

[App page](https://appshunter.io/ios/app/h2ochk-hayward/id1367373317)

Easily measure key water quality parameters for pools and spas, including pH, chlorine, and alkalinity. Get fast, accurate results and receive personalized chemical dosage recommendations for optimal water balance.

**Highlights:** Measures 5 water quality parameters, Accurate and fast results, Recommends chemical dosages, Supports pool and spa water, Helps achieve perfect water balance

**In-app purchases:** none


### 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 H2OCHK Hayward free?

H2OCHK Hayward 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, H2OCHK Hayward or Pooli?

Pooli is rated higher. H2OCHK Hayward averages 3.0 out of 5 from 4 ratings, while Pooli averages 4.6 from 369 ratings.

### Do H2OCHK Hayward or Pooli have ads?

H2OCHK Hayward shows ads; Pooli does not.

### Which is updated more often, H2OCHK Hayward or Pooli?

H2OCHK Hayward ships an update monthly, and Pooli every 2 weeks. Most recently, H2OCHK Hayward was updated on October 10, 2026 and Pooli on October 26, 2026.

---

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