# 랭콘아일랜드 4.0 vs April Buff

The clearest difference is rating: April Buff at 4.6 against 랭콘아일랜드 4.0's 1.0. April Buff also leads on review sentiment (72% vs 35%) and ratings volume (7 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

April Buff holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: April Buff has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 35% of 랭콘아일랜드 4.0's written reviews are positive against 72% of April Buff's.

랭콘아일랜드 4.0 ships an update monthly, April Buff every 5 weeks. The most recent releases landed on June 24, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | 랭콘아일랜드 4.0 | April Buff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/40/id1441389361/reviews) | **[4.6 (7 ratings)](https://appshunter.io/ios/app/april-buff/id1498580532/reviews)** |
| Number of ratings | 1 | **7** |
| Positive reviews | 34.8% of reviews | **72.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 2.4 GB | 208 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Avalon Education](https://appshunter.io/developer/928372728) | [CREVERSE, Inc.](https://appshunter.io/developer/739652504) |

## What reviewers say

### 랭콘아일랜드 4.0

[App page](https://appshunter.io/ios/app/40/id1441389361)

This mobile program is designed for students to naturally learn and reinforce language acquisition through homework, review, and preview exercises linked to academy classes. It offers four difficulty levels for practice, accessible even to non-students.

**Highlights:** Mobile homework assignments, Integrated with academy classes, Language acquisition reinforcement, Homework, preview, and review exercises, Four difficulty levels of practice

**Features:** macOS Compatibility

**In-app purchases:** none


### April Buff

[App page](https://appshunter.io/ios/app/april-buff/id1498580532)

This app uses augmented reality to make learning English vocabulary fun for elementary students. It offers interactive games, quizzes, and progress tracking linked to a specific curriculum. Users can collect word cards and compete nationally.

**Highlights:** AR-based vocabulary study, Interactive games and quizzes, Collect word and chunk cards, National ranking system, Scan textbook to start games, Linked to Learning Portal

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 랭콘아일랜드 4.0 free?

랭콘아일랜드 4.0 is free to download, with no in-app purchases.

### Is April Buff free?

April Buff is free to download, with no in-app purchases.

### Which has better reviews, 랭콘아일랜드 4.0 or April Buff?

April Buff is rated higher. 랭콘아일랜드 4.0 averages 1.0 out of 5 from 1 ratings, while April Buff averages 4.6 from 7 ratings.

### Do 랭콘아일랜드 4.0 or April Buff have ads?

Neither 랭콘아일랜드 4.0 nor April Buff shows ads.

### Which is updated more often, 랭콘아일랜드 4.0 or April Buff?

랭콘아일랜드 4.0 ships an update monthly, and April Buff every 5 weeks. Most recently, 랭콘아일랜드 4.0 was updated on June 24, 2026 and April Buff on August 13, 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.*