# Smart vs ESS Energy

The clearest difference is iOS requirement: Smart at 9.0 against ESS Energy's 16.6. On price, update cadence, ads 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.

Smart ships an update monthly, ESS Energy every 5 weeks. The most recent releases landed on October 25, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Smart | ESS Energy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 38 MB | 54 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [祥梯 孟](https://appshunter.io/developer/1070155084) | [仁义 樊](https://appshunter.io/developer/1406210820) |

## What reviewers say

### Smart

[App page](https://appshunter.io/ios/app/smart-lamp/id1495574551)

**Features:** macOS Compatibility

**In-app purchases:** none


### ESS Energy

[App page](https://appshunter.io/ios/app/ess-energy/id1642888340)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart free?

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

### Is ESS Energy free?

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

### Do Smart or ESS Energy have ads?

Neither Smart nor ESS Energy shows ads.

### Which is updated more often, Smart or ESS Energy?

Smart ships an update monthly, and ESS Energy every 5 weeks. Most recently, Smart was updated on October 25, 2026 and ESS Energy on September 10, 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.*