# Learn C Programming vs 贞云智控

The clearest difference is ads: Learn C Programming at none against 贞云智控's shown. 贞云智控's advantage is update cadence (fortnightly vs every 3 months) and iOS requirement (15.6 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Learn C Programming sells 1 one-off in-app purchase and 贞云智控 sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Learn C Programming ships an update every 3 months, 贞云智控 fortnightly. The most recent releases landed on October 3, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Learn C Programming | 贞云智控 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 19 MB | 28 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文利 罗](https://appshunter.io/developer/1743701483) | [Chengdu zhenyunzhikong Technology Co., Ltd.](https://appshunter.io/developer/1896586511) |

## What reviewers say

### Learn C Programming

[App page](https://appshunter.io/ios/app/learn-c-programming-offline/id6505055441)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C Language Assistant Unlock | $1.99 | one-time |


### 贞云智控

[App page](https://appshunter.io/ios/app/id6768571594)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 遥控器服务 | $2.99 | per month |


## Frequently asked questions

### Is Learn C Programming free?

Learn C Programming is free to download, with in-app purchases available.

### Is 贞云智控 free?

贞云智控 is free to download, with in-app purchases available.

### Do Learn C Programming or 贞云智控 have ads?

贞云智控 shows ads; Learn C Programming does not.

### Which is updated more often, Learn C Programming or 贞云智控?

Learn C Programming ships an update every 3 months, and 贞云智控 fortnightly. Most recently, Learn C Programming was updated on October 3, 2026 and 贞云智控 on September 25, 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.*