# USmart vs 山海新能

The clearest difference is update cadence: 山海新能 at every 11 days against USmart's every 3 months. USmart's advantage is iOS requirement (11.0 vs 15.6). 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.

USmart ships an update every 3 months, 山海新能 every 11 days. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | USmart | 山海新能 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Size | 128 MB | 106 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [杭州品联科技有限公司](https://appshunter.io/developer/1133906765) | [Shanhai Wisdom (Beijing) Energy Technology Co., Ltd.](https://appshunter.io/developer/1605711549) |

## What reviewers say

### USmart

[App page](https://appshunter.io/ios/app/usmart/id1449674452)

**In-app purchases:** none


### 山海新能

[App page](https://appshunter.io/ios/app/id1486697520)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is USmart free?

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

### Is 山海新能 free?

山海新能 is free to download, with no in-app purchases.

### Do USmart or 山海新能 have ads?

Neither USmart nor 山海新能 shows ads.

### Which is updated more often, USmart or 山海新能?

USmart ships an update every 3 months, and 山海新能 every 11 days. Most recently, USmart was updated on October 1, 2026 and 山海新能 on October 15, 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.*