# OM vs Smart OM

The clearest difference is device support: OM at 3 against Smart OM's —. OM also leads on iOS requirement (9.0 vs 12.0). On price and in-app purchases 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 | OM | Smart OM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 23 months | — |
| Size | 105 MB | 120 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [玉萍 林](https://appshunter.io/developer/1532007541) | [Shenzhen Aiko Digital Energy Technology Co., Ltd.](https://appshunter.io/developer/1683475467) |

## What reviewers say

### OM

[App page](https://appshunter.io/ios/app/om-smart/id1532009206)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart OM

[App page](https://appshunter.io/ios/app/smart-om/id6448090700)

**In-app purchases:** none


## Frequently asked questions

### Is OM free?

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

### Is Smart OM free?

Smart OM 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.*