# Smart Air Box vs iEnergy

The clearest difference is update cadence: Smart Air Box at every 2 weeks against iEnergy's every 4 months. iEnergy's advantage is iOS requirement (15.5 vs 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.

Smart Air Box ships an update every 2 weeks, iEnergy every 4 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | Smart Air Box | iEnergy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Size | 9 MB | 25 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fan4Dry](https://appshunter.io/developer/1311293476) | [Shenzhen ZTE Software Co., Ltd.](https://appshunter.io/developer/1863573894) |

## What reviewers say

### Smart Air Box

[App page](https://appshunter.io/ios/app/smart-air-box/id1311293477)

**Features:** macOS Compatibility

**In-app purchases:** none


### iEnergy

[App page](https://appshunter.io/ios/app/ienergy/id6544801425)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Air Box free?

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

### Is iEnergy free?

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

### Do Smart Air Box or iEnergy have ads?

Neither Smart Air Box nor iEnergy shows ads.

### Which is updated more often, Smart Air Box or iEnergy?

Smart Air Box ships an update every 2 weeks, and iEnergy every 4 months. Most recently, Smart Air Box was updated on November 4, 2026 and iEnergy on November 4, 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.*