# 智慧式用电 vs eCall C

The clearest difference is iOS requirement: 智慧式用电 at 9.0 against eCall C's 12.0. 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.

智慧式用电 ships an update every 4 months, eCall C every 3 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 智慧式用电 | eCall C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Size | 20 MB | 34 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mantunsci](https://appshunter.io/developer/1061501764) | [Otis High Rise Elevator (Shanghai) Co.,Ltd.](https://appshunter.io/developer/1404205720) |

## What reviewers say

### 智慧式用电

[App page](https://appshunter.io/ios/app/id1217716909)

**Features:** macOS Compatibility

**In-app purchases:** none


### eCall C

[App page](https://appshunter.io/ios/app/ecall-c/id6460589258)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 智慧式用电 free?

智慧式用电 is free to download, with no in-app purchases.

### Is eCall C free?

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

### Do 智慧式用电 or eCall C have ads?

Neither 智慧式用电 nor eCall C shows ads.

### Which is updated more often, 智慧式用电 or eCall C?

智慧式用电 ships an update every 4 months, and eCall C every 3 months. Most recently, 智慧式用电 was updated on November 11, 2026 and eCall C on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*