# iTer vs C Notebook

The clearest difference is update cadence: iTer at every 4 days against C Notebook's fortnightly. C Notebook's advantage is review sentiment (75% vs 60%) and monetization model (free with in-app purchases vs paid). On price, rating, ratings volume and ads there is nothing between them.

iTer costs $0.99 and C Notebook $0.99 up front. iTer sells 1 one-off in-app purchase 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.

On the App Store both sit at effectively the same score — 5.0 for iTer against 5.0 for C Notebook. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 60% of iTer's written reviews are positive against 75% of C Notebook's.

iTer ships an update every 4 days, C Notebook fortnightly. The most recent releases landed on September 19, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | iTer | C Notebook |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/iter-it-learning/id1224934068/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/c-notebook/id1621919001/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 60.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 19 MB | 32 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, iPod, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [天从 何](https://appshunter.io/developer/914453386) | [铖 邢](https://appshunter.io/developer/1497880786) |

## What reviewers say

### iTer

[App page](https://appshunter.io/ios/app/iter-it-learning/id1224934068)

This app provides an extensive offline library of over 10,000 interview questions for developers across various programming languages and career paths. It includes company-specific exams, smart learning tools, daily quizzes, and powerful search functionality to aid in interview preparation.

**Highlights:** 10,000+ offline interview questions, 16 language tracks and 12 career paths, Company exam collections, Smart learning management (starring, mastery labels), Daily quiz habit builder, Powerful global search, Home screen widgets and quick actions

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip the developer | $0.99 | 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 iTer free?

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

### Is C Notebook free?

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

### Which has better reviews, iTer or C Notebook?

iTer and C Notebook are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do iTer or C Notebook have ads?

Neither iTer nor C Notebook shows ads.

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

iTer ships an update every 4 days, and C Notebook fortnightly. Most recently, iTer was updated on September 19, 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.*