# Cosmo vs Devmaxx

The clearest difference is review sentiment: Cosmo at 84% against Devmaxx's 21%. Cosmo also leads on monetization model (free with in-app purchases vs subscription) and rating (4.8 vs 4.4). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Cosmo sells 4 in-app purchases, starting at $12.99 per month and Devmaxx sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Cosmo holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 810 and 495 respectively. Written reviews point the same way: 84% of Cosmo's written reviews are positive against 21% of Devmaxx's.

Cosmo ships an update fortnightly, Devmaxx every 2 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Cosmo | Devmaxx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (810 ratings)](https://appshunter.io/ios/app/cosmo-learn-genai-and-more/id6744418707/reviews)** | [4.4 (495 ratings)](https://appshunter.io/ios/app/devmaxx/id6758278144/reviews) |
| Number of ratings | **810** | 495 |
| Positive reviews | **84.1% of reviews** | 20.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 94 MB | 26 MB |
| Requires iOS | **16.4** | 17.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [CodeSignal](https://appshunter.io/developer/1807636459) | [Arjay McCandless LLC](https://appshunter.io/developer/1871931520) |

## 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


### Devmaxx

[App page](https://appshunter.io/ios/app/devmaxx/id6758278144)

This app provides a daily system design question to help software engineers master essential skills for interviews and career growth. It offers clear explanations, linked resources, and a private community for learning and practice.

**Highlights:** Daily system design questions, Clear explanations and answer breakdowns, Linked learning resources, Access to previous questions, Private developer community, Progress tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Devmaxx Subscription | $8.99 | per month |
| Annual Devmaxx Subscription | $59.99 | per year |


## Frequently asked questions

### Is Cosmo free?

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

### Is Devmaxx free?

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

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

Cosmo is rated higher. Cosmo averages 4.8 out of 5 from 810 ratings, while Devmaxx averages 4.4 from 495 ratings.

### Do Cosmo or Devmaxx have ads?

Neither Cosmo nor Devmaxx shows ads.

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

Cosmo ships an update fortnightly, and Devmaxx every 2 weeks. Most recently, Cosmo was updated on September 24, 2026 and Devmaxx on September 22, 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.*