# IoT EMS vs Usmart4.0

The clearest difference is device support: IoT EMS at 2 against Usmart4.0's —. On price, in-app purchases and iOS requirement 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 | IoT EMS | Usmart4.0 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Size | 25 MB | 28 MB |
| Requires iOS | 13 | 13.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [ACREL CO.,LTD](https://appshunter.io/developer/1277572474) | [SINOMACHINE TECHNOLOGIES](https://appshunter.io/developer/1522831496) |

## What reviewers say

### IoT EMS

[App page](https://appshunter.io/ios/app/iot-ems/id1560302424)

**Features:** macOS Compatibility

**In-app purchases:** none


### Usmart4.0

[App page](https://appshunter.io/ios/app/usmart40/id6449350966)

**In-app purchases:** none


## Frequently asked questions

### Is IoT EMS free?

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

### Is Usmart4.0 free?

Usmart4.0 is free to download, with no in-app purchases.

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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.*