# IIoT Box vs Control System Calc

The clearest difference is iOS requirement: IIoT Box at 11.2 against Control System Calc's 17.0. 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.

## The numbers

| Metric | IIoT Box | Control System Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 58 MB | 6 MB |
| Requires iOS | **11.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Wecon technology co.,Ltd](https://appshunter.io/developer/1044168609) | [洋 刘](https://appshunter.io/developer/6775317751) |

## What reviewers say

### IIoT Box

[App page](https://appshunter.io/ios/app/iiot-box/id1547572324)

**Features:** macOS Compatibility

**In-app purchases:** none


### Control System Calc

[App page](https://appshunter.io/ios/app/control-system-calc/id6791956580)

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

**In-app purchases:** none


## Frequently asked questions

### Is IIoT Box free?

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

### Is Control System Calc free?

Control System Calc is free to download, with no in-app purchases.

### Do IIoT Box or Control System Calc have ads?

Neither IIoT Box nor Control System Calc shows ads.

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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.*