# C Notebook vs CodeViewer

The clearest difference is in-app purchases: CodeViewer at none against C Notebook's 1. CodeViewer also leads on chart position (#35 vs unranked). C Notebook's advantage is update cadence (fortnightly vs every 8 months) and device support (5 vs 2). On price and ads there is nothing between them.

C Notebook costs $0.99 and CodeViewer $0.29 up front. C Notebook sells 1 in-app purchase, starting at $0.99 per month. CodeViewer asks for nothing beyond the download.

C Notebook ships an update fortnightly, CodeViewer every 8 months. The most recent releases landed on September 26, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | C Notebook | CodeViewer |
| --- | --- | --- |
| Price | $0.99 | **$0.29** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/c-notebook/id1621919001/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 8 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | **#35** |
| Size | 32 MB | 1 MB |
| Requires iOS | **14.0** | 17.2 |
| Devices | **iPhone, iPad, iPod, Mac, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [铖 邢](https://appshunter.io/developer/1497880786) | [健 王](https://appshunter.io/developer/1558318494) |

## What reviewers say

### 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 |


### CodeViewer

[App page](https://appshunter.io/ios/app/codeviewer/id6443973448)

**Currently charting:** #35 Top Paid · Developer Tools (US App Store)

**In-app purchases:** none


## Frequently asked questions

### Is C Notebook free?

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

### Is CodeViewer free?

CodeViewer costs $0.29, with no in-app purchases.

### Do C Notebook or CodeViewer have ads?

Neither C Notebook nor CodeViewer shows ads.

### Which is updated more often, C Notebook or CodeViewer?

C Notebook ships an update fortnightly, and CodeViewer every 8 months. Most recently, C Notebook was updated on September 26, 2026 and CodeViewer on October 8, 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.*