# Pool Math by TroubleFreePool vs Pool Tenders

The clearest difference is rating: Pool Math by TroubleFreePool at 3.6 against Pool Tenders's 1.0. Pool Math by TroubleFreePool also leads on update cadence (fortnightly vs every 8 months) and ratings volume (287 vs 1). Pool Tenders's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.0). 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. Pool Tenders asks for nothing beyond the download.

Pool Math by TroubleFreePool holds the better App Store score, 3.6 against 1.0. That said, the two scores are not equally well evidenced: Pool Math by TroubleFreePool has 287 ratings behind it against 1, so its average is the more settled of the two.

Pool Math by TroubleFreePool ships an update fortnightly, Pool Tenders every 8 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Pool Math by TroubleFreePool | Pool Tenders |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (287 ratings)](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pool-tenders/id1518553792/reviews) |
| Number of ratings | **287** | 1 |
| Positive reviews | 63.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 8 months |
| Monetization | Freemium | **Free** |
| Size | 314 MB | 9 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TroubleFreePool](https://appshunter.io/developer/1228819358) | [Jason Lin](https://appshunter.io/developer/1518553791) |

## 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


### Pool Tenders

[App page](https://appshunter.io/ios/app/pool-tenders/id1518553792)

Control and schedule Bluetooth-enabled pool LED lighting. Customize colors, brightness, and effects for daily use or holidays. Offers manual fine-tuning and pre-set programs for various atmospheres.

**Highlights:** Bluetooth lighting control, Customizable colors, Brightness and speed adjustment, Pre-set lighting programs, Manual and auto modes, Scheduling for daily and holidays

**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 Pool Tenders free?

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

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

Pool Math by TroubleFreePool is rated higher. Pool Math by TroubleFreePool averages 3.6 out of 5 from 287 ratings, while Pool Tenders averages 1.0 from 1 ratings.

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

Neither Pool Math by TroubleFreePool nor Pool Tenders shows ads.

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

Pool Math by TroubleFreePool ships an update fortnightly, and Pool Tenders every 8 months. Most recently, Pool Math by TroubleFreePool was updated on October 24, 2026 and Pool Tenders on October 10, 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.*