# Karel1981 vs Pseudocode, PSeInt, Visualg

The clearest difference is in-app purchases: Karel1981 at none against Pseudocode, PSeInt, Visualg's 6. Karel1981 also leads on ads (none vs shown) and iOS requirement (9.0 vs 15.0). Pseudocode, PSeInt, Visualg's advantage is review sentiment (100% vs 67%) and update cadence (every 10 days vs every 5 months). On price, rating and device support there is nothing between them.

Both are free to download. Pseudocode, PSeInt, Visualg sells 6 one-off in-app purchases. Karel1981 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Karel1981 against 4.5 for Pseudocode, PSeInt, Visualg. That said, the two scores are not equally well evidenced: Pseudocode, PSeInt, Visualg has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 67% of Karel1981's written reviews are positive against 100% of Pseudocode, PSeInt, Visualg's.

Karel1981 ships an update every 5 months, Pseudocode, PSeInt, Visualg every 10 days. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Karel1981 | Pseudocode, PSeInt, Visualg |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/karel1981/id694629633/reviews) | [4.5 (18 ratings)](https://appshunter.io/ios/app/pseudocode-pseint-visualg/id6756153978/reviews) |
| Number of ratings | 2 | **18** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 65 MB | 55 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IHPCI.org, z.s.](https://appshunter.io/developer/1253405466) | [Diego Velasquez Lopez](https://appshunter.io/developer/1497659505) |

## 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


### Pseudocode, PSeInt, Visualg

[App page](https://appshunter.io/ios/app/pseudocode-pseint-visualg/id6756153978)

This app helps beginners learn programming concepts through pseudocode. It offers multiple interpretation modes and includes a code editor, offline interpreter, and flowchart visualization. Users can also share code and access learning resources.

**Highlights:** Multiple pseudocode standards (PSeInt, VisualG, AP CSP), Flexible and strict interpretation modes, Code editor with syntax highlighting, Offline interpreter, Interactive real-time data entry, Flowchart visualization, Community sharing and rankings

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation Level 1 | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Donation Level 2 | $2.99 | one-time |
| Donation Level 3 | $4.99 | one-time |
| Flow Diagram | $4.99 | one-time |
| Pseudocode Pro | $7.99 | one-time |


## Frequently asked questions

### Is Karel1981 free?

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

### Is Pseudocode, PSeInt, Visualg free?

Pseudocode, PSeInt, Visualg is free to download, with in-app purchases available.

### Which has better reviews, Karel1981 or Pseudocode, PSeInt, Visualg?

Karel1981 and Pseudocode, PSeInt, Visualg are both rated 4.5 out of 5 on the App Store, from 2 and 18 ratings respectively.

### Do Karel1981 or Pseudocode, PSeInt, Visualg have ads?

Pseudocode, PSeInt, Visualg shows ads; Karel1981 does not.

### Which is updated more often, Karel1981 or Pseudocode, PSeInt, Visualg?

Karel1981 ships an update every 5 months, and Pseudocode, PSeInt, Visualg every 10 days. Most recently, Karel1981 was updated on October 2, 2026 and Pseudocode, PSeInt, Visualg on October 9, 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.*