# Cosmo (formerly ClassUp) vs KiddiMath Practice

The clearest difference is rating: KiddiMath Practice at 5.0 against Cosmo (formerly ClassUp)'s 4.5. KiddiMath Practice also leads on in-app purchases (none vs 3). Cosmo (formerly ClassUp)'s advantage is update cadence (every 9 days vs every 10 months) and ratings volume (879 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

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

KiddiMath Practice holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Cosmo (formerly ClassUp) has 879 ratings behind it against 2, so its average is the more settled of the two.

Cosmo (formerly ClassUp) ships an update every 9 days, KiddiMath Practice every 10 months. Both last shipped on September 30, 2026.

## The numbers

| Metric | Cosmo (formerly ClassUp) | KiddiMath Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (879 ratings)](https://appshunter.io/ios/app/cosmo-formerly-classup/id1624007748/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kiddimath-practice/id6476605084/reviews)** |
| Number of ratings | **879** | 2 |
| Positive reviews | 80.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 10 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 408 MB | 66 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Algorithm of Learning Inc.](https://appshunter.io/developer/1787524245) | [Truong Nguyen](https://appshunter.io/developer/1727305057) |

## 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


### KiddiMath Practice

[App page](https://appshunter.io/ios/app/kiddimath-practice/id6476605084)

This app helps children aged 4-12 improve their mental math skills. It uses engaging methods like FingerMath and Soroban to boost concentration, memory, reflexes, and confidence.

**Highlights:** Mental math practice, FingerMath method, Soroban method, Develops concentration, Boosts memory, Enhances reflexes, Builds confidence

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cosmo (formerly ClassUp) free?

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

### Is KiddiMath Practice free?

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

### Which has better reviews, Cosmo (formerly ClassUp) or KiddiMath Practice?

KiddiMath Practice is rated higher. Cosmo (formerly ClassUp) averages 4.5 out of 5 from 879 ratings, while KiddiMath Practice averages 5.0 from 2 ratings.

### Do Cosmo (formerly ClassUp) or KiddiMath Practice have ads?

Neither Cosmo (formerly ClassUp) nor KiddiMath Practice shows ads.

### Which is updated more often, Cosmo (formerly ClassUp) or KiddiMath Practice?

Cosmo (formerly ClassUp) ships an update every 9 days, and KiddiMath Practice every 10 months. Most recently, Cosmo (formerly ClassUp) was updated on September 30, 2026 and KiddiMath Practice on September 30, 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.*