# Cosmo vs LeetCode

Cosmo and LeetCode both sit at 4.8 stars, but that hides the real split: 84% of Cosmo's written reviews are positive against 44% of LeetCode's. LeetCode's advantage is monetization model (ad-supported vs free with in-app purchases). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Cosmo sells 4 in-app purchases, starting at $12.99 per month and LeetCode sells 2 in-app purchases, starting at $35.00 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Cosmo against 4.8 for LeetCode. Both are backed by a comparable volume of ratings — 858 and 659 respectively. Written reviews are what separate them: 84% of Cosmo's written reviews are positive against 44% of LeetCode's.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Cosmo | LeetCode |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (858 ratings)](https://appshunter.io/ios/app/cosmo-learn-genai-and-more/id6744418707/reviews)** | [4.8 (659 ratings)](https://appshunter.io/ios/app/leetcode/id6755816119/reviews) |
| Number of ratings | **858** | 659 |
| Positive reviews | **83.9% of reviews** | 44.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 95 MB | 110 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [CodeSignal](https://appshunter.io/developer/1807636459) | [LeetCode](https://appshunter.io/developer/1739326909) |

## What reviewers say

### 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


### LeetCode

[App page](https://appshunter.io/ios/app/leetcode/id6755816119)

Practice coding challenges and prepare for technical interviews on the go. Discover company-specific questions, manage your practice lists, and track your progress. Stay updated with contests and daily quests to improve your skills.

**Highlights:** Search and discover company questions, Practice coding challenges, Manage practice lists, Track personal progress, Contest registration and calendar sync, Daily challenges and quests

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LeetCode Premium Monthly | $35.00 | per month |
| LeetCode Premium Yearly | $159.00 | per year |


## Frequently asked questions

### Is Cosmo free?

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

### Is LeetCode free?

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

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

Cosmo is rated higher. Cosmo averages 4.8 out of 5 from 858 ratings, while LeetCode averages 4.8 from 659 ratings.

### Do Cosmo or LeetCode have ads?

Neither Cosmo nor LeetCode shows ads.

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

Cosmo ships an update fortnightly, and LeetCode fortnightly. Most recently, Cosmo was updated on October 28, 2026 and LeetCode on October 26, 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.*