# Karel the Robot vs Smart Logic Simulator

The clearest difference is price: Smart Logic Simulator at Free against Karel the Robot's $1.99. Smart Logic Simulator also leads on update cadence (every 2 months vs every 20 months) and device support (3 vs 1). Karel the Robot's advantage is rating (5.0 vs 3.0) and in-app purchases (none vs 1). On review sentiment, ratings volume, ads and iOS requirement there is nothing between them.

Smart Logic Simulator is free to download; Karel the Robot costs $1.99 up front. Smart Logic Simulator sells 1 one-off in-app purchase. Karel the Robot asks for nothing beyond the download.

Karel the Robot holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

Karel the Robot ships an update every 20 months, Smart Logic Simulator every 2 months. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Karel the Robot | Smart Logic Simulator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/karel-the-robot/id807177431/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/smart-logic-simulator/id6742043778/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 59 MB |
| Requires iOS | 15.6 | **15.3** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CloudMakers, s. r. o.](https://appshunter.io/developer/789740577) | [Tomasz Czart](https://appshunter.io/developer/1796528140) |

## What reviewers say

### Karel the Robot

[App page](https://appshunter.io/ios/app/karel-the-robot/id807177431)

This educational app introduces programming concepts through interactive logic puzzles. It features a friendly robot that follows simple instructions, making coding accessible and fun for beginners and children.

**Highlights:** Learn programming concepts, Interactive logic puzzles, Robot-based instruction, Structured programming environment, Beginner-friendly coding

**In-app purchases:** none


### Smart Logic Simulator

[App page](https://appshunter.io/ios/app/smart-logic-simulator/id6742043778)

Design and simulate digital circuits using a drag-and-drop interface. Experiment with various logic gates, flip-flops, and arithmetic circuits to build complex systems. Ideal for students and hobbyists interested in electronics.

**Highlights:** Drag-and-drop circuit design, Logic gate simulation, Integrated circuit design, Flip-flops and latches, Multiplexers and demultiplexers, Arithmetic circuit design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One-time fee | $29.99 | one-time |


## Frequently asked questions

### Is Karel the Robot free?

Karel the Robot costs $1.99, with no in-app purchases.

### Is Smart Logic Simulator free?

Smart Logic Simulator is free to download, with in-app purchases available.

### Which has better reviews, Karel the Robot or Smart Logic Simulator?

Karel the Robot is rated higher. Karel the Robot averages 5.0 out of 5 from 1 ratings, while Smart Logic Simulator averages 3.0 from 2 ratings.

### Do Karel the Robot or Smart Logic Simulator have ads?

Neither Karel the Robot nor Smart Logic Simulator shows ads.

### Which is updated more often, Karel the Robot or Smart Logic Simulator?

Karel the Robot ships an update every 20 months, and Smart Logic Simulator every 2 months. Most recently, Karel the Robot was updated on October 6, 2026 and Smart Logic Simulator on October 10, 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.*