# C/C++ LLVM Clang vs C Notebook

The clearest difference is price: C/C++ LLVM Clang at Free against C Notebook's $0.99. C/C++ LLVM Clang also leads on ratings volume (50 vs 1) and review sentiment (85% vs 75%). C Notebook's advantage is rating (5.0 vs 4.3) and update cadence (fortnightly vs every 2 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

C/C++ LLVM Clang is free to download; C Notebook costs $0.99 up front. C/C++ LLVM Clang sells 7 one-off in-app purchases and C Notebook sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

C Notebook holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: C/C++ LLVM Clang has 50 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 85% of C/C++ LLVM Clang's written reviews are positive against 75% of C Notebook's, so the app with the better star average is not the one people write more warmly about.

C/C++ LLVM Clang ships an update every 2 months, C Notebook fortnightly. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | C/C++ LLVM Clang | C Notebook |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.3 (50 ratings)](https://appshunter.io/ios/app/cc-plus-plus-llvm-clang/id1016290003/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/c-notebook/id1621919001/reviews)** |
| Number of ratings | **50** | 1 |
| Positive reviews | **84.8% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 137 MB | 32 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod, Apple Watch | **iPhone, iPad, iPod, Mac, Vision Pro** |
| Age rating | 17+ | 4+ |
| Developer | [小文 黄](https://appshunter.io/developer/490328393) | [铖 邢](https://appshunter.io/developer/1497880786) |

## What reviewers say

### C/C++ LLVM Clang

[App page](https://appshunter.io/ios/app/cc-plus-plus-llvm-clang/id1016290003)

This tool facilitates C/C++ learning and development with offline compilation, code assistance, and cloud storage. It offers features like code templates, autocompletion, and Git integration for efficient programming and collaboration.

**Highlights:** Offline LLVM+Clang compilation and execution, Code templates and autocompletion, Git fetching from Gitee and GitHub, iCloud storage and multi-device sync, LAN HTTP/FTP file transfer, Built-in browser for learning materials, File management and compression

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| To remove ads | $0.99 | one-time |
| Autocomplete | $0.99 | one-time |
| Password Service | $0.99 | one-time |
| Encryption Compression | $0.99 | one-time |
| Simple Vedio | $0.99 | one-time |
| Text Search | $0.99 | one-time |
| File Transfer | $1.99 | one-time |


### C Notebook

[App page](https://appshunter.io/ios/app/c-notebook/id1621919001)

This application allows users to write, debug, and run C code directly within a note-taking interface. It offers advanced debugging tools like real-time variable monitoring, trend charting, and line-by-line execution. Notes support Markdown formatting, and cloud synchronization enables seamless access across multiple devices.

**Highlights:** C language coding and local debugging, Real-time variable value monitoring and modification, Variable trend charts, Line-by-line code execution, Syntax highlighting and auto-completion, Markdown note support, Cloud synchronization across devices

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C Notebook Premium | $0.99 | per month |


## Frequently asked questions

### Is C/C++ LLVM Clang free?

C/C++ LLVM Clang is free to download, with in-app purchases available.

### Is C Notebook free?

C Notebook costs $0.99, and also offers in-app purchases.

### Which has better reviews, C/C++ LLVM Clang or C Notebook?

C Notebook is rated higher. C/C++ LLVM Clang averages 4.3 out of 5 from 50 ratings, while C Notebook averages 5.0 from 1 ratings.

### Do C/C++ LLVM Clang or C Notebook have ads?

Neither C/C++ LLVM Clang nor C Notebook shows ads.

### Which is updated more often, C/C++ LLVM Clang or C Notebook?

C/C++ LLVM Clang ships an update every 2 months, and C Notebook fortnightly. Most recently, C/C++ LLVM Clang was updated on September 24, 2026 and C Notebook on September 26, 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.*