# TCA Manager vs Simple Pool

The clearest difference is in-app purchases: TCA Manager at none against Simple Pool's 1. TCA Manager also leads on iOS requirement (15.6 vs 17.6). Simple Pool's advantage is update cadence (every 6 days vs every 6 weeks). 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. TCA Manager asks for nothing beyond the download.

TCA Manager ships an update every 6 weeks, Simple Pool every 6 days. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | TCA Manager | Simple Pool |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 29 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TUNISIAN COMPANY OF AUTOMATION](https://appshunter.io/developer/1702316508) | [Grey Park, LLC](https://appshunter.io/developer/1739831354) |

## What reviewers say

### TCA Manager

[App page](https://appshunter.io/ios/app/tca-manager/id6461117223)

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

**In-app purchases:** none


### 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, iPhone Duo support

**In-app purchases (1)**

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


## Frequently asked questions

### Is TCA Manager free?

TCA Manager is free to download, with no in-app purchases.

### Is Simple Pool free?

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

### Do TCA Manager or Simple Pool have ads?

Neither TCA Manager nor Simple Pool shows ads.

### Which is updated more often, TCA Manager or Simple Pool?

TCA Manager ships an update every 6 weeks, and Simple Pool every 6 days. Most recently, TCA Manager was updated on October 25, 2026 and Simple Pool on October 30, 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.*