# PoolTherm pro vs FerroControl

The clearest difference is update cadence: PoolTherm pro at every 3 days against FerroControl's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PoolTherm pro ships an update every 3 days, FerroControl every 4 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | PoolTherm pro | FerroControl |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 months |
| Size | 109 MB | 11 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Dantherm](https://appshunter.io/developer/1368468352) | [ARNE DENNIS BERGGREN](https://appshunter.io/developer/1896198050) |

## What reviewers say

### PoolTherm pro

[App page](https://appshunter.io/ios/app/pooltherm-pro/id6741553467)

**Features:** macOS Compatibility

**In-app purchases:** none


### FerroControl

[App page](https://appshunter.io/ios/app/ferrocontrol/id6766107446)

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

**In-app purchases:** none


## Frequently asked questions

### Is PoolTherm pro free?

PoolTherm pro is free to download, with no in-app purchases.

### Is FerroControl free?

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

### Do PoolTherm pro or FerroControl have ads?

Neither PoolTherm pro nor FerroControl shows ads.

### Which is updated more often, PoolTherm pro or FerroControl?

PoolTherm pro ships an update every 3 days, and FerroControl every 4 months. Most recently, PoolTherm pro was updated on October 1, 2026 and FerroControl on October 1, 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.*