# ICO vs Pool Math Calculator

The clearest difference is rating: Pool Math Calculator at 4.8 against ICO's 3.9. ICO's advantage is in-app purchases (none vs 1) and iOS requirement (14.0 vs 18.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

Pool Math Calculator holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 38 and 43 respectively.

ICO ships an update every 5 weeks, Pool Math Calculator every 2 months. The most recent releases landed on September 26, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | ICO | Pool Math Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (38 ratings)](https://appshunter.io/ios/app/ico-smart-poolspa-partner/id1132611479/reviews) | **[4.8 (43 ratings)](https://appshunter.io/ios/app/pool-math-calculator/id6746519942/reviews)** |
| Number of ratings | 38 | **43** |
| Positive reviews | 45.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 78 MB | 4 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ONDILO](https://appshunter.io/developer/1132611478) | [Sergii Nesterenko](https://appshunter.io/developer/1686841405) |

## What reviewers say

### ICO

[App page](https://appshunter.io/ios/app/ico-smart-poolspa-partner/id1132611479)

This application helps you maintain optimal water quality in your pool or spa. It provides personalized guidance for chemical dosing and best practices to ensure a healthier swimming experience and protect your equipment. Monitor your water quality conveniently from anywhere, anytime.

**Highlights:** Measures critical water parameters, Promotes healthier, cleaner water, Personalized chemical dosing guidance, Protects pool equipment, Provides best swimming experience, Accessible from anywhere, anytime

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 ICO free?

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

### Is Pool Math Calculator free?

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

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

Pool Math Calculator is rated higher. ICO averages 3.9 out of 5 from 38 ratings, while Pool Math Calculator averages 4.8 from 43 ratings.

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

Neither ICO nor Pool Math Calculator shows ads.

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

ICO ships an update every 5 weeks, and Pool Math Calculator every 2 months. Most recently, ICO was updated on September 26, 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.*