# H2OCHK Hayward vs Pool Plus

The clearest difference is review sentiment: Pool Plus at 100% against H2OCHK Hayward's 18%. Pool Plus also leads on rating (5.0 vs 3.0) and ads (none vs shown). H2OCHK Hayward's advantage is price (Free vs $0.99). On ratings volume, update cadence, in-app purchases and device support there is nothing between them.

H2OCHK Hayward is free to download; Pool Plus costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pool Plus holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 18% of H2OCHK Hayward's written reviews are positive against 100% of Pool Plus's.

H2OCHK Hayward ships an update monthly, Pool Plus every 6 weeks. The most recent releases landed on June 1, 2026 and August 7, 2026 respectively.

## The numbers

| Metric | H2OCHK Hayward | Pool Plus |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/h2ochk-hayward/id1367373317/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pool-plus/id1488707868/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 18.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | **Ad-supported** | Paid |
| Best chart rank | — | **#174** |
| Size | 17 MB | 1 MB |
| Requires iOS | 13.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Digital Concepts of Missouri, Inc.](https://appshunter.io/developer/1159162920) | [Corey Sessions](https://appshunter.io/developer/1351154100) |

## 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


### Pool Plus

[App page](https://appshunter.io/ios/app/pool-plus/id1488707868)

**Currently charting:** #174 Top Paid · Utilities (US App Store)

Easily calculate the water volume of your swimming pool in gallons. This tool provides a quick and straightforward method for estimating pool capacity.

**Highlights:** Estimate pool water volume, Calculate in gallons, Quick and easy to use, Designed for swimming pools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is H2OCHK Hayward free?

H2OCHK Hayward is free to download, with no in-app purchases.

### Is Pool Plus free?

Pool Plus costs $0.99, with no in-app purchases.

### Which has better reviews, H2OCHK Hayward or Pool Plus?

Pool Plus is rated higher. H2OCHK Hayward averages 3.0 out of 5 from 4 ratings, while Pool Plus averages 5.0 from 2 ratings.

### Do H2OCHK Hayward or Pool Plus have ads?

H2OCHK Hayward shows ads; Pool Plus does not.

### Which is updated more often, H2OCHK Hayward or Pool Plus?

H2OCHK Hayward ships an update monthly, and Pool Plus every 6 weeks. Most recently, H2OCHK Hayward was updated on June 1, 2026 and Pool Plus on August 7, 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.*