# Pool Chem Calculator vs Pool Plus

The clearest difference is review sentiment: Pool Plus at 100% against Pool Chem Calculator's 36%. Pool Plus also leads on rating (5.0 vs 4.3) and in-app purchases (none vs 1). Pool Chem Calculator's advantage is price (Free vs $0.99) and update cadence (every 6 days vs every 6 weeks). On device support there is nothing between them.

Pool Chem Calculator is free to download; Pool Plus costs $0.99 up front. Pool Chem Calculator sells 1 in-app purchase, starting at $1.99 per month. Pool Plus asks for nothing beyond the download.

Pool Plus holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Pool Chem Calculator has 36 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 36% of Pool Chem Calculator's written reviews are positive against 100% of Pool Plus's.

Pool Chem Calculator ships an update every 6 days, Pool Plus every 6 weeks. The most recent releases landed on September 18, 2026 and August 7, 2026 respectively.

## The numbers

| Metric | Pool Chem Calculator | Pool Plus |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.3 (36 ratings)](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pool-plus/id1488707868/reviews)** |
| Number of ratings | **36** | 2 |
| Positive reviews | 36.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 6 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#174** |
| Size | 113 MB | 1 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gunter Business Solutions Inc](https://appshunter.io/developer/1453351221) | [Corey Sessions](https://appshunter.io/developer/1351154100) |

## What reviewers say

### Pool Chem Calculator

[App page](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222)

This app helps manage pool chemistry with 24 specialized calculators for dosing, pH, and more. It features a customizable maintenance calendar, equipment tracking, and easy report sharing for up to 100 pools. Ideal for maintaining a clean and swim-ready pool.

**Highlights:** 24 precision pool chemical calculators, Customizable maintenance calendar with notifications, Equipment tracking and management, Multi-user pool sharing, Professional report builder, Smart pool route mapping

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Pool Subscription | $1.99 | per month |


### 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 Pool Chem Calculator free?

Pool Chem Calculator is free to download, with in-app purchases available.

### Is Pool Plus free?

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

### Which has better reviews, Pool Chem Calculator or Pool Plus?

Pool Plus is rated higher. Pool Chem Calculator averages 4.3 out of 5 from 36 ratings, while Pool Plus averages 5.0 from 2 ratings.

### Do Pool Chem Calculator or Pool Plus have ads?

Pool Chem Calculator shows ads; Pool Plus does not.

### Which is updated more often, Pool Chem Calculator or Pool Plus?

Pool Chem Calculator ships an update every 6 days, and Pool Plus every 6 weeks. Most recently, Pool Chem Calculator was updated on September 18, 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.*