# PoolCalc vs Pool Chem Calculator

The clearest difference is rating: Pool Chem Calculator at 4.3 against PoolCalc's 1.0. Pool Chem Calculator also leads on update cadence (every 6 days vs every 2 months) and review sentiment (36% vs 17%). PoolCalc's advantage is ads (none vs shown) and iOS requirement (7.1 vs 16.6). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. PoolCalc sells 1 one-off in-app purchase and Pool Chem Calculator sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Pool Chem Calculator holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Pool Chem Calculator has 36 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 17% of PoolCalc's written reviews are positive against 36% of Pool Chem Calculator's.

PoolCalc ships an update every 2 months, Pool Chem Calculator every 6 days. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PoolCalc | Pool Chem Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/poolcalc/id514707093/reviews) | **[4.3 (36 ratings)](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222/reviews)** |
| Number of ratings | 1 | **36** |
| Positive reviews | 16.7% of reviews | **36.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 113 MB |
| Requires iOS | **7.1** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bonham Customs](https://appshunter.io/developer/514707096) | [Gunter Business Solutions Inc](https://appshunter.io/developer/1453351221) |

## What reviewers say

### PoolCalc

[App page](https://appshunter.io/ios/app/poolcalc/id514707093)

This utility calculates the scaling potential of pool water using the Langelier Saturation Index. It allows users to save and edit readings, locations, and add notes. A paid upgrade offers advanced features for pool professionals.

**Highlights:** Langelier Saturation Index calculation, Save and edit readings, Save and edit locations, Add notes to readings, Quick add readings to locations, Paid upgrade for multiple location routes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pool Professional Upgrade | $2.99 | one-time |


### 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 |


## Frequently asked questions

### Is PoolCalc free?

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

### Is Pool Chem Calculator free?

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

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

Pool Chem Calculator is rated higher. PoolCalc averages 1.0 out of 5 from 1 ratings, while Pool Chem Calculator averages 4.3 from 36 ratings.

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

Pool Chem Calculator shows ads; PoolCalc does not.

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

PoolCalc ships an update every 2 months, and Pool Chem Calculator every 6 days. Most recently, PoolCalc was updated on October 15, 2026 and Pool Chem Calculator on October 6, 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.*