# Simple Pool vs Pool Math Calculator

The clearest difference is update cadence: Simple Pool at every 6 days against Pool Math Calculator's every 2 months. Pool Math Calculator's advantage is monetization model (free vs free with in-app purchases). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Simple Pool sells 1 one-off in-app purchase and Pool Math Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Simple Pool against 4.8 for Pool Math Calculator. Both are backed by a comparable volume of ratings — 19 and 43 respectively.

Simple Pool ships an update every 6 days, Pool Math Calculator every 2 months. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Simple Pool | Pool Math Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (19 ratings)](https://appshunter.io/ios/app/simple-pool-chemistry-and-math/id6744664712/reviews)** | [4.8 (43 ratings)](https://appshunter.io/ios/app/pool-math-calculator/id6746519942/reviews) |
| Number of ratings | 19 | **43** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 24 MB | 4 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Grey Park, LLC](https://appshunter.io/developer/1739831354) | [Sergii Nesterenko](https://appshunter.io/developer/1686841405) |

## What reviewers say

### Simple Pool

[App page](https://appshunter.io/ios/app/simple-pool-chemistry-and-math/id6744664712)

This app helps you precisely test, dose, and track your pool and spa water chemistry. It offers practical dosing recommendations and tools to simplify routine maintenance for various pool types. Get accurate chemical calculations without ongoing fees.

**Highlights:** Water test logging, Dosing recommendations, Chemical tracking, LSI/CSI monitoring, Shock treatment mode, Test reminders, Chemical effects preview

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimplePool - Lifetime | $9.99 | one-time |


### Pool Math Calculator

[App page](https://appshunter.io/ios/app/pool-math-calculator/id6746519942)

This app simplifies pool water chemistry by calculating precise chemical dosages for balanced water. It helps estimate the impact of adding various chemicals and determines pool volume from basic measurements. Designed for practical, everyday pool maintenance, it keeps essential information readily accessible.

**Highlights:** Chemical dosing calculations, Water balance targets, Chemical addition effect estimation, Pool volume calculation, Pool settings tracking, CSI target checks

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $12.99 | one-time |


## Frequently asked questions

### Is Simple Pool free?

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

### Is Pool Math Calculator free?

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

### Which has better reviews, Simple Pool or Pool Math Calculator?

Simple Pool is rated higher. Simple Pool averages 4.9 out of 5 from 19 ratings, while Pool Math Calculator averages 4.8 from 43 ratings.

### Do Simple Pool or Pool Math Calculator have ads?

Neither Simple Pool nor Pool Math Calculator shows ads.

### Which is updated more often, Simple Pool or Pool Math Calculator?

Simple Pool ships an update every 6 days, and Pool Math Calculator every 2 months. Most recently, Simple Pool was updated on September 16, 2026 and Pool Math Calculator on September 8, 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.*