# EM3720 vs Mac Tools EM823

EM3720 and Mac Tools EM823 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | EM3720 | Mac Tools EM823 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 6 MB | 5 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [ZHANGZHOU EASTERN INTELLIGENT METER CO., LTD.](https://appshunter.io/developer/1064839954) | [Stanley Black & Decker, Inc.](https://appshunter.io/developer/414050137) |

## What reviewers say

### EM3720

[App page](https://appshunter.io/ios/app/em3720/id1376380656)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mac Tools EM823

[App page](https://appshunter.io/ios/app/mac-tools-em823/id6503308043)

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

**In-app purchases:** none


## Frequently asked questions

### Is EM3720 free?

EM3720 is free to download, with no in-app purchases.

### Is Mac Tools EM823 free?

Mac Tools EM823 is free to download, with no in-app purchases.

### Do EM3720 or Mac Tools EM823 have ads?

Neither EM3720 nor Mac Tools EM823 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.*