# Pool vs Pool Water Calculator

The clearest difference is review sentiment: Pool Water Calculator at 77% against Pool's 22%. Pool Water Calculator also leads on rating (4.6 vs 4.1) and chart position (#150 vs unranked). Pool's advantage is ratings volume (630 vs 95). On price, ads, in-app purchases and monetization model there is nothing between them.

Pool costs $4.99 and Pool Water Calculator $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pool Water Calculator holds the better App Store score, 4.6 against 4.1. That said, the two scores are not equally well evidenced: Pool has 630 ratings behind it against 95, so its average is the more settled of the two. Written reviews point the same way: 22% of Pool's written reviews are positive against 77% of Pool Water Calculator's.

Pool ships an update every 5 weeks, Pool Water Calculator fortnightly. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Pool | Pool Water Calculator |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | [4.1 (630 ratings)](https://appshunter.io/ios/app/pool-calculator/id412876581/reviews) | **[4.6 (95 ratings)](https://appshunter.io/ios/app/pool-water-calculator/id1249919347/reviews)** |
| Number of ratings | **630** | 95 |
| Positive reviews | 21.8% of reviews | **76.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Best chart rank | — | **#150** |
| Size | 17 MB | 30 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pool and Spa Resources, LLC](https://appshunter.io/developer/1358030201) | [Ingenio Productions LLC](https://appshunter.io/developer/1249919346) |

## What reviewers say

### Pool

[App page](https://appshunter.io/ios/app/pool-calculator/id412876581)

This app simplifies swimming pool and hot tub chemistry maintenance by performing all necessary calculations. It provides clear instructions on chemical dosages to maintain balanced, clear water, eliminating the need for complex charts and formulas.

**Highlights:** Chemical dosage calculations, Pool volume calculation, Chemical effects analysis, Customizable chemical ranges, Offline functionality

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Useful pool chemistry calculator
- 🚀 Makes pool maintenance easy
- 👍 Provides chemical dosage recommendations
- 🔍 Helpful 'Effects' tool to understand chemical impacts

**What reviewers complain about**

- 🐛 Accuracy issues with certain chemical calculations
- 🔍 Confusing or outdated chemical names
- 🔍 Limited customization options
- 🐛 Crashes and compatibility issues with newer iOS versions

**Reported bugs**

- App crashes on launch for many users
- Keyboard issues preventing data entry
- Incorrect chemical effect information (e.g. soda ash)
- Volume calculation not updating properly

**Requested features**

- Ability to save and track test history
- Support for multiple pools/spas
- Metric-only unit support
- More detailed chemical dosage information (e.g. weight-based)


### Pool Water Calculator

[App page](https://appshunter.io/ios/app/pool-water-calculator/id1249919347)

**Currently charting:** #150 Top Paid · Lifestyle (US App Store)

This app helps you precisely balance and maintain your pool or spa water chemistry. It offers a chemistry calculator, pool volume measurement, and detailed data logging with visual trend analysis. Get tailored recommendations and manage multiple water profiles with ease.

**Highlights:** Chemistry calculator for precise chemical dosages, Pool volume calculator, Data logging for test results and additions, Visual trend graphs for water chemistry, Personalized chemical recommendations, Manage multiple pool/spa profiles, Broad chemical support

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

**In-app purchases:** none


## Frequently asked questions

### Is Pool free?

Pool costs $4.99, with no in-app purchases.

### Is Pool Water Calculator free?

Pool Water Calculator costs $4.99, with no in-app purchases.

### Which has better reviews, Pool or Pool Water Calculator?

Pool Water Calculator is rated higher. Pool averages 4.1 out of 5 from 630 ratings, while Pool Water Calculator averages 4.6 from 95 ratings.

### Do Pool or Pool Water Calculator have ads?

Neither Pool nor Pool Water Calculator shows ads.

### Which is updated more often, Pool or Pool Water Calculator?

Pool ships an update every 5 weeks, and Pool Water Calculator fortnightly. Most recently, Pool was updated on October 28, 2026 and Pool Water Calculator on October 26, 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.*