# 클래스카드 vs Buff

The clearest difference is rating: 클래스카드 at 4.2 against Buff's 3.0. 클래스카드 also leads on review sentiment (68% vs 42%) and update cadence (every 4 days vs every 3 weeks). 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.

클래스카드 holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: 클래스카드 has 208 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 68% of 클래스카드's written reviews are positive against 42% of Buff's.

클래스카드 ships an update every 4 days, Buff every 3 weeks. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 클래스카드 | Buff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (208 ratings)](https://appshunter.io/ios/app/id1176435331/reviews)** | [3.0 (5 ratings)](https://appshunter.io/ios/app/buff-word-power/id6739328232/reviews) |
| Number of ratings | **208** | 5 |
| Positive reviews | **68.4% of reviews** | 41.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 75 MB | 228 MB |
| Requires iOS | **13.0** | 13.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CLASSCARD, Inc.](https://appshunter.io/developer/1481434005) | [CREVERSE, Inc.](https://appshunter.io/developer/739652504) |

## What reviewers say

### 클래스카드

[App page](https://appshunter.io/ios/app/id1176435331)

**Features:** Vision Pro support

**In-app purchases:** none


### Buff

[App page](https://appshunter.io/ios/app/buff-word-power/id6739328232)

This app helps students from specific language academies reinforce vocabulary learned through i-Learning/p-Learning and prepare for word tests. Users can review learned words, track their progress, and level up their 'word power' as they memorize more terms.

**Highlights:** Vocabulary training for tests, Review learned words, Track memorization progress, Level up word power, Character customization, Tablet and phone compatible

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 클래스카드 free?

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

### Is Buff free?

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

### Which has better reviews, 클래스카드 or Buff?

클래스카드 is rated higher. 클래스카드 averages 4.2 out of 5 from 208 ratings, while Buff averages 3.0 from 5 ratings.

### Do 클래스카드 or Buff have ads?

Neither 클래스카드 nor Buff shows ads.

### Which is updated more often, 클래스카드 or Buff?

클래스카드 ships an update every 4 days, and Buff every 3 weeks. Most recently, 클래스카드 was updated on October 19, 2026 and Buff on October 21, 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.*