# Simple Pool vs Aqua Switch

The clearest difference is in-app purchases: Aqua Switch at none against Simple Pool's 1. Aqua Switch also leads on iOS requirement (13.0 vs 17.6). Simple Pool's advantage is update cadence (every 6 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Simple Pool sells 1 one-off in-app purchase. Aqua Switch asks for nothing beyond the download.

Simple Pool ships an update every 6 days, Aqua Switch every 2 months. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Simple Pool | Aqua Switch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/simple-pool-chemistry-and-math/id6744664712/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 99 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Grey Park, LLC](https://appshunter.io/developer/1739831354) | [Aqualux](https://appshunter.io/developer/1457459826) |

## What reviewers say

### Simple Pool

[App page](https://appshunter.io/ios/app/simple-pool-chemistry-and-math/id6744664712)

This app helps you precisely test, dose, and track your pool and spa water chemistry. It offers practical dosing recommendations and tools to simplify routine maintenance for various pool types. Get accurate chemical calculations without ongoing fees.

**Highlights:** Water test logging, Dosing recommendations, Chemical tracking, LSI/CSI monitoring, Shock treatment mode, Test reminders, Chemical effects preview

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimplePool - Lifetime | $9.99 | one-time |


### Aqua Switch

[App page](https://appshunter.io/ios/app/aqua-switch/id6754590442)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Pool free?

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

### Is Aqua Switch free?

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

### Do Simple Pool or Aqua Switch have ads?

Neither Simple Pool nor Aqua Switch shows ads.

### Which is updated more often, Simple Pool or Aqua Switch?

Simple Pool ships an update every 6 days, and Aqua Switch every 2 months. Most recently, Simple Pool was updated on October 24, 2026 and Aqua Switch on October 5, 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.*