# Cosmo (formerly ClassUp) vs Code Ninjas

The clearest difference is review sentiment: Cosmo (formerly ClassUp) at 80% against Code Ninjas's 39%. Cosmo (formerly ClassUp) also leads on update cadence (every 9 days vs every 5 months). Code Ninjas's advantage is in-app purchases (none vs 3) and rating (4.8 vs 4.5). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Cosmo (formerly ClassUp) sells 3 one-off in-app purchases. Code Ninjas asks for nothing beyond the download.

Code Ninjas holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 879 and 1.2K respectively. Written reviews complicate that: 80% of Cosmo (formerly ClassUp)'s written reviews are positive against 39% of Code Ninjas's, so the app with the better star average is not the one people write more warmly about.

Cosmo (formerly ClassUp) ships an update every 9 days, Code Ninjas every 5 months. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Cosmo (formerly ClassUp) | Code Ninjas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (879 ratings)](https://appshunter.io/ios/app/cosmo-formerly-classup/id1624007748/reviews) | **[4.8 (1.2K ratings)](https://appshunter.io/ios/app/code-ninjas/id1633655761/reviews)** |
| Number of ratings | 879 | **1.2K** |
| Positive reviews | **79.8% of reviews** | 39.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 408 MB | 22 MB |
| Requires iOS | 15.0 | **11.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Algorithm of Learning Inc.](https://appshunter.io/developer/1787524245) | [CODE NINJAS, LLC](https://appshunter.io/developer/1596958609) |

## What reviewers say

### Cosmo (formerly ClassUp)

[App page](https://appshunter.io/ios/app/cosmo-formerly-classup/id1624007748)

This app offers AI-powered, personalized learning experiences guided by real teachers. It provides live 1-on-1 classes, instant homework help, and adaptive learning plans to foster confident and motivated learners.

**Highlights:** Live 1-on-1 classes with AI and human teachers, AI-powered personalized learning plans, Instant homework help and chat support, AI writing tool for assignments, Unlimited practice for Math & ELA, Progress tracking dashboard

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| First Class | $0.99 | one-time |
| Test 20 lessons package | $0.99 | one-time |
| 3 one-on-one classes | $74.99 | one-time |

**What reviewers like**

- 👍 Awesome teachers
- 🚀 Personalized learning
- 💡 Engaging and fun lessons
- 🚀 Flexible scheduling
- 👍 Knowledgeable and professional tutors

**What reviewers complain about**

- 🐛 Scheduling issues and class cancellations
- 💰 Expensive pricing
- 🤯 Poor customer service and communication
- 🐛 Technical issues with app and connectivity

**Reported bugs**

- Frequent class cancellations
- Billing and refund issues
- Unreliable internet connectivity during classes

**Requested features**

- More affordable pricing options
- Improved scheduling and class management
- Better communication with parents
- Enhanced technical stability and reliability


### Code Ninjas

[App page](https://appshunter.io/ios/app/code-ninjas/id1633655761)

This app allows members to manage their accounts and communicate with their local Code Ninjas. Users can receive important notifications and easily register for programs, events, and classes.

**Highlights:** Account management, Enhanced messaging, Receive notifications, Register for programs, Register for events, Register for classes

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Friendly and knowledgeable staff
- 👍 Supportive environment for children
- 👍 Children enjoy the coding classes
- 👍 Helps build strong foundations in coding

**What reviewers complain about**

- 🐛 App issues (crashes, not loading, etc.)
- 🕰️ Limited scheduling flexibility
- 💰 Unfair charges even after quitting the program
- 🙍‍♀️ Poor customer service and management

**Reported bugs**

- App not loading or crashing
- Scheduling issues and unreliable class information
- Billing problems and unexpected charges

**Requested features**

- Calendar integration for class scheduling
- Ability to view session usage and carry-over hours
- Improved app design and user experience
- Removal of unnecessary features (e.g., Studio Code)


## Frequently asked questions

### Is Cosmo (formerly ClassUp) free?

Cosmo (formerly ClassUp) is free to download, with in-app purchases available.

### Is Code Ninjas free?

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

### Which has better reviews, Cosmo (formerly ClassUp) or Code Ninjas?

Code Ninjas is rated higher. Cosmo (formerly ClassUp) averages 4.5 out of 5 from 879 ratings, while Code Ninjas averages 4.8 from 1.2K ratings.

### Do Cosmo (formerly ClassUp) or Code Ninjas have ads?

Neither Cosmo (formerly ClassUp) nor Code Ninjas shows ads.

### Which is updated more often, Cosmo (formerly ClassUp) or Code Ninjas?

Cosmo (formerly ClassUp) ships an update every 9 days, and Code Ninjas every 5 months. Most recently, Cosmo (formerly ClassUp) was updated on October 2, 2026 and Code Ninjas on September 29, 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.*