# Pool Math by TroubleFreePool vs WNFlightLog

The clearest difference is rating: WNFlightLog at 5.0 against Pool Math by TroubleFreePool's 3.6. WNFlightLog also leads on review sentiment (100% vs 63%) and in-app purchases (none vs 1). Pool Math by TroubleFreePool's advantage is ratings volume (287 vs 7) and update cadence (fortnightly vs every 5 weeks). On price, ads and device support 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. WNFlightLog asks for nothing beyond the download.

WNFlightLog holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Pool Math by TroubleFreePool has 287 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 63% of Pool Math by TroubleFreePool's written reviews are positive against 100% of WNFlightLog's.

Pool Math by TroubleFreePool ships an update fortnightly, WNFlightLog every 5 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Pool Math by TroubleFreePool | WNFlightLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (287 ratings)](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/wnflightlog/id6766131626/reviews)** |
| Number of ratings | **287** | 7 |
| Positive reviews | 63.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Freemium | **Free** |
| Size | 314 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TroubleFreePool](https://appshunter.io/developer/1228819358) | [Thomas Winsor](https://appshunter.io/developer/1895422074) |

## What reviewers say

### 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


### WNFlightLog

[App page](https://appshunter.io/ios/app/wnflightlog/id6766131626)

Visualize your flight logbook data with graphical depictions and detailed statistics. Export your logs in custom ranges for other aviation programs and add individual notes for flights, crew, and aircraft.

**Highlights:** Graphical depiction of logbook data, Data import from swapa.org, Custom logbook range export to ForeFlight CSV, Illustrates flights by route, crew, and N-number, Time-in-type and crew member history, Add individual crew, aircraft, and flight notes

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

**In-app purchases:** none


## Frequently asked questions

### Is Pool Math by TroubleFreePool free?

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

### Is WNFlightLog free?

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

### Which has better reviews, Pool Math by TroubleFreePool or WNFlightLog?

WNFlightLog is rated higher. Pool Math by TroubleFreePool averages 3.6 out of 5 from 287 ratings, while WNFlightLog averages 5.0 from 7 ratings.

### Do Pool Math by TroubleFreePool or WNFlightLog have ads?

Neither Pool Math by TroubleFreePool nor WNFlightLog shows ads.

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

Pool Math by TroubleFreePool ships an update fortnightly, and WNFlightLog every 5 weeks. Most recently, Pool Math by TroubleFreePool was updated on November 4, 2026 and WNFlightLog on October 31, 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.*