# 千仞数字设施 vs eCall C

The clearest difference is update cadence: eCall C at every 3 months against 千仞数字设施's every 7 months. eCall C also leads on iOS requirement (12.0 vs 15.1). 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.

千仞数字设施 ships an update every 7 months, eCall C every 3 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 千仞数字设施 | eCall C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Size | 82 MB | 34 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Zhongwu Internet Technology Development Co., Ltd.](https://appshunter.io/developer/1403314019) | [Otis High Rise Elevator (Shanghai) Co.,Ltd.](https://appshunter.io/developer/1404205720) |

## What reviewers say

### 千仞数字设施

[App page](https://appshunter.io/ios/app/id1403316663)

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

**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 千仞数字设施 free?

千仞数字设施 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 千仞数字设施 or eCall C have ads?

Neither 千仞数字设施 nor eCall C shows ads.

### Which is updated more often, 千仞数字设施 or eCall C?

千仞数字设施 ships an update every 7 months, and eCall C every 3 months. Most recently, 千仞数字设施 was updated on November 2, 2026 and eCall C on November 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.*