# 简之 vs C3

The clearest difference is iOS requirement: 简之 at 9.0 against C3's 13.0. 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.

简之 ships an update every 3 weeks, C3 monthly. Both last shipped on October 3, 2026.

## The numbers

| Metric | 简之 | C3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 42 MB | 64 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Chuangyin Network Technology Co., Ltd.](https://appshunter.io/developer/1468448099) | [Shenzhen Dashi Iot Technology Co.,Ltd](https://appshunter.io/developer/1598852202) |

## What reviewers say

### 简之

[App page](https://appshunter.io/ios/app/id1468448100)

**Features:** macOS Compatibility

**In-app purchases:** none


### C3

[App page](https://appshunter.io/ios/app/c3-plus/id1598852200)

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

**In-app purchases:** none


## Frequently asked questions

### Is 简之 free?

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

### Is C3 free?

C3 is free to download, with no in-app purchases.

### Do 简之 or C3 have ads?

Neither 简之 nor C3 shows ads.

### Which is updated more often, 简之 or C3?

简之 ships an update every 3 weeks, and C3 monthly. Most recently, 简之 was updated on October 3, 2026 and C3 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.*