# Smart iMeters vs Necool

The clearest difference is update cadence: Necool at every 10 days against Smart iMeters's every 20 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.

Smart iMeters ships an update every 20 months, Necool every 10 days. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Smart iMeters | Necool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 10 days** |
| Size | 29 MB | 92 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Changzhou Haoyi Technology Co.,Ltd.](https://appshunter.io/developer/6775329697) | [Xuzhou Yunkong Electrical Technology Co., LTD](https://appshunter.io/developer/1883904580) |

## What reviewers say

### Smart iMeters

[App page](https://appshunter.io/ios/app/smart-imeters/id6450159159)

**Features:** macOS Compatibility

**In-app purchases:** none


### Necool

[App page](https://appshunter.io/ios/app/necool/id6760327287)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart iMeters free?

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

### Is Necool free?

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

### Do Smart iMeters or Necool have ads?

Neither Smart iMeters nor Necool shows ads.

### Which is updated more often, Smart iMeters or Necool?

Smart iMeters ships an update every 20 months, and Necool every 10 days. Most recently, Smart iMeters was updated on October 3, 2026 and Necool on October 7, 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.*