# Karel1981 vs C Compiler

The clearest difference is in-app purchases: Karel1981 at none against C Compiler's 4. Karel1981 also leads on ads (none vs shown) and rating (4.5 vs 4.3). C Compiler's advantage is ratings volume (112 vs 2). On price, update cadence and device support there is nothing between them.

Both are free to download. C Compiler sells 4 in-app purchases, starting at $2.99 per month. Karel1981 asks for nothing beyond the download.

Karel1981 holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: C Compiler has 112 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of Karel1981's written reviews are positive against 59% of C Compiler's.

Karel1981 ships an update every 5 months, C Compiler every 4 months. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Karel1981 | C Compiler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/karel1981/id694629633/reviews)** | [4.3 (112 ratings)](https://appshunter.io/ios/app/c-compiler/id1265577717/reviews) |
| Number of ratings | 2 | **112** |
| Positive reviews | **66.7% of reviews** | 58.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 65 MB | 47 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IHPCI.org, z.s.](https://appshunter.io/developer/1253405466) | [sutheesh sukumaran](https://appshunter.io/developer/1262850647) |

## What reviewers say

### Karel1981

[App page](https://appshunter.io/ios/app/karel1981/id694629633)

Learn programming with a beginner-friendly language inspired by a robot. This educational tool introduces fundamental coding concepts through interactive exercises, making it ideal for those new to computer science.

**Highlights:** Beginner-friendly programming language, Introduces fundamental coding concepts, Interactive learning exercises, Based on Karel The Robot book, Ideal for computer science novices

**Features:** macOS Compatibility

**In-app purchases:** none


### C Compiler

[App page](https://appshunter.io/ios/app/c-compiler/id1265577717)

This application provides an integrated development environment for C programming, complete with an offline tutorial and sample programs. It features syntax recognition and auto-formatting to aid users in writing and running complex C code.

**Highlights:** Run complex C programs, Offline C tutorial, Sample C programs, Syntax recognition IDE, Auto text formatting IDE, File opening and saving

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C Compiler Premium — Monthly | $2.99 | per month |
| C Compilar Premium — Yearly | $24.99 | per year |
| Remove Ads | $49.99 | one-time |
| LifeTime | $49.99 | one-time |


## Frequently asked questions

### Is Karel1981 free?

Karel1981 is free to download, with no in-app purchases.

### Is C Compiler free?

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

### Which has better reviews, Karel1981 or C Compiler?

Karel1981 is rated higher. Karel1981 averages 4.5 out of 5 from 2 ratings, while C Compiler averages 4.3 from 112 ratings.

### Do Karel1981 or C Compiler have ads?

C Compiler shows ads; Karel1981 does not.

### Which is updated more often, Karel1981 or C Compiler?

Karel1981 ships an update every 5 months, and C Compiler every 4 months. Most recently, Karel1981 was updated on October 2, 2026 and C Compiler on October 6, 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.*