# Codelet vs Cosmo

The clearest difference is in-app purchases: Codelet at none against Cosmo's 4. Codelet also leads on iOS requirement (13.4 vs 16.4). Cosmo's advantage is review sentiment (84% vs 53%) and update cadence (fortnightly vs every 2 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Cosmo sells 4 in-app purchases, starting at $12.99 per month. Codelet asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Codelet against 4.8 for Cosmo. That said, the two scores are not equally well evidenced: Cosmo has 810 ratings behind it against 127, so its average is the more settled of the two. Written reviews are what separate them: 53% of Codelet's written reviews are positive against 84% of Cosmo's.

Codelet ships an update every 2 months, Cosmo fortnightly. The most recent releases landed on August 13, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Codelet | Cosmo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (127 ratings)](https://appshunter.io/ios/app/codelet/id1517315454/reviews) | **[4.8 (810 ratings)](https://appshunter.io/ios/app/cosmo-learn-genai-and-more/id6744418707/reviews)** |
| Number of ratings | 127 | **810** |
| Positive reviews | 53.3% of reviews | **84.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 94 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Codelet LLC](https://appshunter.io/developer/1517315453) | [CodeSignal](https://appshunter.io/developer/1807636459) |

## 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


### Cosmo

[App page](https://appshunter.io/ios/app/cosmo-learn-genai-and-more/id6744418707)

This app offers hands-on, practice-based lessons to build in-demand skills in areas like GenAI, business, and tech. It acts as a personal AI tutor, adapting to your learning pace and providing instant help on any topic. Earn shareable certificates and skill badges to advance your career.

**Highlights:** Personalized AI tutor, Hands-on, practice-based lessons, Learn GenAI, business, tech, and more, Earn skill badges and certificates, Instant help on any topic, 200+ career-building skills

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $12.99 | per month |
| Unlimited Access | $24.99 | per month |
| Unlimited Access | $78.00 | per year |
| Unlimited Access | $149.99 | per year |

**What reviewers like**

- 🌟 Amazing app
- 🎮 Gamification that feels productive
- 🚀 Learning made easy - on the go!
- 😊 Cutest teacher award goes to Cosmo!!!
- 👍 So much better than doom scrolling!

**Requested features**

- Ability to upgrade/customize Cosmo's outfit and spaceship


## Frequently asked questions

### Is Codelet free?

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

### Is Cosmo free?

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

### Which has better reviews, Codelet or Cosmo?

Cosmo is rated higher. Codelet averages 4.7 out of 5 from 127 ratings, while Cosmo averages 4.8 from 810 ratings.

### Do Codelet or Cosmo have ads?

Neither Codelet nor Cosmo shows ads.

### Which is updated more often, Codelet or Cosmo?

Codelet ships an update every 2 months, and Cosmo fortnightly. Most recently, Codelet was updated on August 13, 2026 and Cosmo on September 24, 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.*