# Pool Math by TroubleFreePool vs dewenwils

The clearest difference is rating: dewenwils at 4.7 against Pool Math by TroubleFreePool's 3.7. dewenwils also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.0). Pool Math by TroubleFreePool's advantage is review sentiment (63% vs 32%) and update cadence (fortnightly vs every 10 months). On price, ratings volume, 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. dewenwils asks for nothing beyond the download.

dewenwils holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 272 and 225 respectively. Written reviews complicate that: 63% of Pool Math by TroubleFreePool's written reviews are positive against 32% of dewenwils's, so the app with the better star average is not the one people write more warmly about.

Pool Math by TroubleFreePool ships an update fortnightly, dewenwils every 10 months. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Pool Math by TroubleFreePool | dewenwils |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (272 ratings)](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359/reviews) | **[4.7 (225 ratings)](https://appshunter.io/ios/app/dewenwils/id1592274178/reviews)** |
| Number of ratings | **272** | 225 |
| Positive reviews | **63.4% of reviews** | 31.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 10 months |
| Monetization | Freemium | **Free** |
| Size | 314 MB | 179 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TroubleFreePool](https://appshunter.io/developer/1228819358) | [Dewenwils Inc.](https://appshunter.io/developer/1592274180) |

## 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


### dewenwils

[App page](https://appshunter.io/ios/app/dewenwils/id1592274178)

Control your smart home devices remotely and connect them for a seamless experience. Monitor device status from anywhere and share access with family members. Discover and purchase new smart products through the integrated online mall.

**Highlights:** Remote device control, Smart home connection, Family device sharing, Real-time status feedback, Online smart product mall

**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 dewenwils free?

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

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

dewenwils is rated higher. Pool Math by TroubleFreePool averages 3.7 out of 5 from 272 ratings, while dewenwils averages 4.7 from 225 ratings.

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

Neither Pool Math by TroubleFreePool nor dewenwils shows ads.

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

Pool Math by TroubleFreePool ships an update fortnightly, and dewenwils every 10 months. Most recently, Pool Math by TroubleFreePool was updated on October 16, 2026 and dewenwils on October 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.*