# Pool Math by TroubleFreePool vs TrueGrind AI

The clearest difference is in-app purchases: TrueGrind AI at none against Pool Math by TroubleFreePool's 1. TrueGrind AI also leads on iOS requirement (12.0 vs 15.0). Pool Math by TroubleFreePool's advantage is ratings volume (272 vs 4) and update cadence (fortnightly vs every 2 months). On price, rating, 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. TrueGrind AI asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.7 for Pool Math by TroubleFreePool against 3.8 for TrueGrind AI. That said, the two scores are not equally well evidenced: Pool Math by TroubleFreePool has 272 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 63% of Pool Math by TroubleFreePool's written reviews are positive against 50% of TrueGrind AI's.

Pool Math by TroubleFreePool ships an update fortnightly, TrueGrind AI every 2 months. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Pool Math by TroubleFreePool | TrueGrind AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (272 ratings)](https://appshunter.io/ios/app/pool-math-by-troublefreepool/id1228819359/reviews) | **[3.8 (4 ratings)](https://appshunter.io/ios/app/truegrind-ai/id1566039023/reviews)** |
| Number of ratings | **272** | 4 |
| Positive reviews | **63.4% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Freemium | **Free** |
| Size | 314 MB | 56 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) | [Clive Coffee LLC](https://appshunter.io/developer/1478192868) |

## 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


### TrueGrind AI

[App page](https://appshunter.io/ios/app/truegrind-ai/id1566039023)

This companion app helps you find the perfect grind setting for your smart espresso grinder. Select from hundreds of coffees, set your desired dose, weight, and time, and let the AI guide you to optimal results. Minimize waste and frustration while achieving consistently amazing espresso shots.

**Highlights:** AI-powered grind setting optimization, Over 500 coffee profiles, Custom coffee profile creation, Dial In Assistant for waste reduction, Syncs settings to smart grinders, Target dose, weight, and time selection

**Features:** macOS Compatibility

**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 TrueGrind AI free?

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

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

TrueGrind AI is rated higher. Pool Math by TroubleFreePool averages 3.7 out of 5 from 272 ratings, while TrueGrind AI averages 3.8 from 4 ratings.

### Do Pool Math by TroubleFreePool or TrueGrind AI have ads?

Neither Pool Math by TroubleFreePool nor TrueGrind AI shows ads.

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

Pool Math by TroubleFreePool ships an update fortnightly, and TrueGrind AI every 2 months. Most recently, Pool Math by TroubleFreePool was updated on October 16, 2026 and TrueGrind AI on October 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.*