# Pool Math Calculator vs Bliss Pool

The clearest difference is in-app purchases: Bliss Pool at none against Pool Math Calculator's 1. Bliss Pool also leads on update cadence (every 5 days vs every 3 months) and iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

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

Pool Math Calculator ships an update every 3 months, Bliss Pool every 5 days. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Pool Math Calculator | Bliss Pool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (43 ratings)](https://appshunter.io/ios/app/pool-math-calculator/id6746519942/reviews)** | — |
| Number of ratings | **43** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 4 MB | 68 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sergii Nesterenko](https://appshunter.io/developer/1686841405) | [Bliss Water Care LLC](https://appshunter.io/developer/1867737956) |

## 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 |


### Bliss Pool

[App page](https://appshunter.io/ios/app/bliss-pool/id6757596988)

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

**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 Bliss Pool free?

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

### Do Pool Math Calculator or Bliss Pool have ads?

Neither Pool Math Calculator nor Bliss Pool shows ads.

### Which is updated more often, Pool Math Calculator or Bliss Pool?

Pool Math Calculator ships an update every 3 months, and Bliss Pool every 5 days. Most recently, Pool Math Calculator was updated on October 19, 2026 and Bliss Pool on October 12, 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.*