# Codelet vs System Design Arcade

The clearest difference is review sentiment: System Design Arcade at 100% against Codelet's 53%. System Design Arcade also leads on update cadence (fortnightly vs every 2 months) and rating (5.0 vs 4.7). Codelet's advantage is ratings volume (127 vs 9) and iOS requirement (13.4 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

System Design Arcade holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Codelet has 127 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 53% of Codelet's written reviews are positive against 100% of System Design Arcade's.

Codelet ships an update every 2 months, System Design Arcade fortnightly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Codelet | System Design Arcade |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (127 ratings)](https://appshunter.io/ios/app/codelet/id1517315454/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/system-design-arcade/id6759821733/reviews)** |
| Number of ratings | **127** | 9 |
| Positive reviews | 53.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 25 MB | 38 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Codelet LLC](https://appshunter.io/developer/1517315453) | [Harsha Hassan Somashekara](https://appshunter.io/developer/1842004703) |

## What reviewers say

### Codelet

[App page](https://appshunter.io/ios/app/codelet/id1517315454)

Prepare for technical interviews by identifying core coding patterns and analyzing your performance. Practice coding questions conveniently to improve your skills and pinpoint areas for growth.

**Highlights:** Identify core patterns, Analyze approaches, Track performance, Identify improvement areas, Practice coding questions, Anytime, anywhere practice

**In-app purchases:** none


### System Design Arcade

[App page](https://appshunter.io/ios/app/system-design-arcade/id6759821733)

Learn complex system design concepts through engaging, bite-sized arcade-style games. Master building blocks, design full systems, and practice with real infrastructure tools. Progress is saved locally and no account is required.

**Highlights:** Arcade-style mini-games for system design concepts, End-to-end system design challenges, Hands-on drills with infrastructure tools, Narrative-driven story mode, Varied challenge types (multiple choice, puzzles, builder), Daily challenges with streak tracking, Offline progress saving

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

**In-app purchases:** none


## Frequently asked questions

### Is Codelet free?

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

### Is System Design Arcade free?

System Design Arcade is free to download, with no in-app purchases.

### Which has better reviews, Codelet or System Design Arcade?

System Design Arcade is rated higher. Codelet averages 4.7 out of 5 from 127 ratings, while System Design Arcade averages 5.0 from 9 ratings.

### Do Codelet or System Design Arcade have ads?

Neither Codelet nor System Design Arcade shows ads.

### Which is updated more often, Codelet or System Design Arcade?

Codelet ships an update every 2 months, and System Design Arcade fortnightly. Most recently, Codelet was updated on October 6, 2026 and System Design Arcade on October 1, 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.*