# Pool Math Calculator vs 2NT*

The clearest difference is in-app purchases: 2NT* at none against Pool Math Calculator's 1. 2NT* also leads on update cadence (weekly vs every 2 months) and rating (5.0 vs 4.8). Pool Math Calculator's advantage is ratings volume (43 vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Pool Math Calculator sells 1 one-off in-app purchase. 2NT* asks for nothing beyond the download.

2NT* holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Pool Math Calculator has 43 ratings behind it against 1, so its average is the more settled of the two.

Pool Math Calculator ships an update every 2 months, 2NT* weekly. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Pool Math Calculator | 2NT* |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (43 ratings)](https://appshunter.io/ios/app/pool-math-calculator/id6746519942/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/2nt/id6775704177/reviews)** |
| Number of ratings | **43** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 4 MB | 7 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sergii Nesterenko](https://appshunter.io/developer/1686841405) | [DOUBLE OR NADA GAMING LLC](https://appshunter.io/developer/1895671601) |

## What reviewers say

### Pool Math Calculator

[App page](https://appshunter.io/ios/app/pool-math-calculator/id6746519942)

This app simplifies pool water chemistry by calculating precise chemical dosages for balanced water. It helps estimate the impact of adding various chemicals and determines pool volume from basic measurements. Designed for practical, everyday pool maintenance, it keeps essential information readily accessible.

**Highlights:** Chemical dosing calculations, Water balance targets, Chemical addition effect estimation, Pool volume calculation, Pool settings tracking, CSI target checks

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $12.99 | one-time |


### 2NT*

[App page](https://appshunter.io/ios/app/2nt/id6775704177)

Discover live events, happy hours, and dining options happening near you tonight. Filter by category, find late-night food, and get directions or buy tickets directly in the app. Earn loyalty rewards by leaving reviews.

**Highlights:** Discover tonight's events, Filter by category, Find late-night food, In-app ticket purchasing, Loyalty rewards program, Location-based results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pool Math Calculator free?

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

### Is 2NT* free?

2NT* is free to download, with no in-app purchases.

### Which has better reviews, Pool Math Calculator or 2NT*?

2NT* is rated higher. Pool Math Calculator averages 4.8 out of 5 from 43 ratings, while 2NT* averages 5.0 from 1 ratings.

### Do Pool Math Calculator or 2NT* have ads?

Neither Pool Math Calculator nor 2NT* shows ads.

### Which is updated more often, Pool Math Calculator or 2NT*?

Pool Math Calculator ships an update every 2 months, and 2NT* weekly. Most recently, Pool Math Calculator was updated on September 23, 2026 and 2NT* on September 25, 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.*