# CNAF Casualty vs Pool Math by TroubleFreePool

The clearest difference is in-app purchases: CNAF Casualty at none against Pool Math by TroubleFreePool's 1. Pool Math by TroubleFreePool's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Pool Math by TroubleFreePool sells 1 in-app purchase, starting at $7.99 per year. CNAF Casualty asks for nothing beyond the download.

CNAF Casualty ships an update every 3 months, Pool Math by TroubleFreePool fortnightly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | CNAF Casualty | Pool Math by TroubleFreePool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (287 ratings)](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359/reviews)** |
| Number of ratings | — | **287** |
| Positive reviews | — | 63.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 54 MB | 314 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Integritek LLC](https://appshunter.io/developer/1219101867) | [TroubleFreePool](https://appshunter.io/developer/1228819358) |

## What reviewers say

### CNAF Casualty

[App page](https://appshunter.io/ios/app/cnaf-casualty/id1219101868)

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

**In-app purchases:** none


### Pool Math by TroubleFreePool

[App page](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359)

Easily manage your swimming pool's water chemistry by tracking key levels like chlorine and pH. This app calculates the precise amounts of chemicals needed to maintain clear, algae-free water, offering a cost-effective alternative to pool store advice.

**Highlights:** Chemical level calculators (pH, Chlorine, Alkalinity, etc.), Track pool maintenance tasks, Log chemical additions, Weather condition tracking, Chemical addition effect calculations, Bleach price comparison, Data backup and export

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pool Math Premium Subscription | $7.99 | per year |

**What reviewers like**

- 💎 Excellent for maintaining a clean, balanced pool
- 🔍 Comprehensive tracking of test results and chemical additions
- 🧠 Helpful recommendations for chemical adjustments
- ⚙️ Useful features like SLAM mode and timeline
- 🤖 Automatic weather data logging

**What reviewers complain about**

- 🐛 Issues with data syncing and backup
- 🤔 Unintuitive interface and navigation
- 💰 Subscription model and lack of one-time purchase
- 🚫 Limited support for non-chlorine sanitizers and spa-specific options
- 🔄 Bugs with chemical addition logging and target value retention

**Reported bugs**

- Subscription issues and inability to restore purchases
- App crashes and freezes on certain actions
- Incorrect chemical recommendations and calculations
- Disappearing historical data after updates

**Requested features**

- Custom target ranges and alerts
- Ability to log non-standard chemical additions
- Export options for data analysis
- Apple Watch integration
- Improved user guidance and on-boarding


## Frequently asked questions

### Is CNAF Casualty free?

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

### Is Pool Math by TroubleFreePool free?

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

### Do CNAF Casualty or Pool Math by TroubleFreePool have ads?

Neither CNAF Casualty nor Pool Math by TroubleFreePool shows ads.

### Which is updated more often, CNAF Casualty or Pool Math by TroubleFreePool?

CNAF Casualty ships an update every 3 months, and Pool Math by TroubleFreePool fortnightly. Most recently, CNAF Casualty was updated on November 2, 2026 and Pool Math by TroubleFreePool on November 4, 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.*