# Class5 (클래스5) vs 클라이 BT (Be a Teacher)

The clearest difference is update cadence: Class5 (클래스5) at every 11 days against 클라이 BT (Be a Teacher)'s every 2 months. Class5 (클래스5) also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Class5 (클래스5) ships an update every 11 days, 클라이 BT (Be a Teacher) every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Class5 (클래스5) | 클라이 BT (Be a Teacher) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (7 ratings)](https://appshunter.io/ios/app/class5-5/id6453687093/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 86.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 months |
| Monetization | Free | — |
| Size | 70 MB | 91 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CLASSCARD, Inc.](https://appshunter.io/developer/1481434005) | [Corp. KLAI Education](https://appshunter.io/developer/1707803411) |

## What reviewers say

### Class5 (클래스5)

[App page](https://appshunter.io/ios/app/class5-5/id6453687093)

This app makes learning English fun with interactive lessons. Students can access phonics, speaking practice through animation, reading comprehension, and writing exercises. It's designed to help users enjoy and master the English language.

**Highlights:** Phonics and song learning, Movie-based listening and speaking practice, Interactive reading comprehension, Sentence building and writing exercises, Animation and dubbing features

**Features:** Vision Pro support

**In-app purchases:** none


### 클라이 BT (Be a Teacher)

[App page](https://appshunter.io/ios/app/bt-be-a-teacher/id6466783781)

**In-app purchases:** none


## Frequently asked questions

### Is Class5 (클래스5) free?

Class5 (클래스5) is free to download, with no in-app purchases.

### Is 클라이 BT (Be a Teacher) free?

클라이 BT (Be a Teacher) is free to download, with no in-app purchases.

### Do Class5 (클래스5) or 클라이 BT (Be a Teacher) have ads?

Neither Class5 (클래스5) nor 클라이 BT (Be a Teacher) shows ads.

### Which is updated more often, Class5 (클래스5) or 클라이 BT (Be a Teacher)?

Class5 (클래스5) ships an update every 11 days, and 클라이 BT (Be a Teacher) every 2 months. Most recently, Class5 (클래스5) was updated on October 30, 2026 and 클라이 BT (Be a Teacher) on October 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.*