# iopool vs Simple Pool

The clearest difference is rating: Simple Pool at 5.0 against iopool's 4.3. Simple Pool also leads on review sentiment (100% vs 60%) and ads (none vs shown). iopool's advantage is in-app purchases (none vs 1) and ratings volume (95 vs 21). On price and device support there is nothing between them.

Both are free to download. Simple Pool sells 1 one-off in-app purchase. iopool asks for nothing beyond the download.

Simple Pool holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 95 and 21 respectively. Written reviews point the same way: 60% of iopool's written reviews are positive against 100% of Simple Pool's.

iopool ships an update every 2 weeks, Simple Pool every 6 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | iopool | Simple Pool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (95 ratings)](https://appshunter.io/ios/app/iopool/id1449698927/reviews) | **[5.0 (21 ratings)](https://appshunter.io/ios/app/simple-pool-chemistry-and-math/id6744664712/reviews)** |
| Number of ratings | **95** | 21 |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 78 MB | 29 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Iopool](https://appshunter.io/developer/1449698926) | [Grey Park, LLC](https://appshunter.io/developer/1739831354) |

## What reviewers say

### iopool

[App page](https://appshunter.io/ios/app/iopool/id1449698927)

This app helps pool owners manage their water treatment with continuous analysis from a smart probe. It provides step-by-step guidance for product additions and intelligent recommendations for maintenance, eliminating the need for manual inventory checks.

**Highlights:** Continuous water analysis, Automated product addition notifications, Step-by-step treatment guidance, Intelligent maintenance recommendations, Product inventory and quantity management, Pool health monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### 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, iPhone Duo support

**In-app purchases (1)**

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


## Frequently asked questions

### Is iopool free?

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

### Is Simple Pool free?

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

### Which has better reviews, iopool or Simple Pool?

Simple Pool is rated higher. iopool averages 4.3 out of 5 from 95 ratings, while Simple Pool averages 5.0 from 21 ratings.

### Do iopool or Simple Pool have ads?

iopool shows ads; Simple Pool does not.

### Which is updated more often, iopool or Simple Pool?

iopool ships an update every 2 weeks, and Simple Pool every 6 days. Most recently, iopool was updated on October 24, 2026 and Simple Pool on October 28, 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.*