# C vs 信昌机器

The clearest difference is iOS requirement: C at 9.0 against 信昌机器's 11.0. 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | C | 信昌机器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 33 MB | 47 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Cummins Tianyuan (Hebei) Technology Co., Ltd.](https://appshunter.io/developer/1128619734) | [森达美信昌机器工程(广东)有限公司](https://appshunter.io/developer/1291667416) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-link/id1128619735)

**Features:** macOS Compatibility

**In-app purchases:** none


### 信昌机器

[App page](https://appshunter.io/ios/app/id1291667417)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is 信昌机器 free?

信昌机器 is free to download, with no in-app purchases.

### Do C or 信昌机器 have ads?

Neither C nor 信昌机器 shows ads.

### Which is updated more often, C or 信昌机器?

C ships an update every 2 months, and 信昌机器 every 2 months. Most recently, C was updated on October 4, 2026 and 信昌机器 on October 3, 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.*