# Pi vs Cosmo

The clearest difference is in-app purchases: Pi at none against Cosmo's 4. Pi also leads on review sentiment (100% vs 84%) and device support (3 vs 1). Cosmo's advantage is ads (none vs shown) and ratings volume (860 vs 35). On price, rating 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. Pi asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Pi against 4.8 for Cosmo. That said, the two scores are not equally well evidenced: Cosmo has 860 ratings behind it against 35, so its average is the more settled of the two. Written reviews are what separate them: 100% of Pi's written reviews are positive against 84% of Cosmo's.

Pi ships an update every 10 days, Cosmo fortnightly. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Pi | Cosmo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (35 ratings)](https://appshunter.io/ios/app/pi-squared/id6737175718/reviews)** | [4.8 (860 ratings)](https://appshunter.io/ios/app/cosmo-learn-genai-and-more/id6744418707/reviews) |
| Number of ratings | 35 | **860** |
| Positive reviews | **100.0% of reviews** | 84.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 89 MB | 95 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [David Carr](https://appshunter.io/developer/1775086517) | [CodeSignal](https://appshunter.io/developer/1807636459) |

## What reviewers say

### Pi

[App page](https://appshunter.io/ios/app/pi-squared/id6737175718)

Engage in quick math challenges and compete with friends to improve your skills. This app transforms math learning into an exciting game, making it fun and accessible for all ages. Swap mindless scrolling for brain-boosting battles and enjoy a positive learning environment.

**Highlights:** Time-pressured math quizzes, Leaderboard competition, Daily math challenges, Smarter screen time alternative, Positive reinforcement messages, Math skill improvement

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent math tool
- 👍 Fun and engaging
- 👍 Intuitive and easy to navigate
- 👍 Great for learning and practice
- 👍 Wakes up the brain


### 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 Pi free?

Pi 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, Pi or Cosmo?

Pi is rated higher. Pi averages 4.9 out of 5 from 35 ratings, while Cosmo averages 4.8 from 860 ratings.

### Do Pi or Cosmo have ads?

Pi shows ads; Cosmo does not.

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

Pi ships an update every 10 days, and Cosmo fortnightly. Most recently, Pi was updated on October 30, 2026 and Cosmo on November 8, 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.*