# 關鍵英單：核心字彙2201 vs CK校園行動APP

The clearest difference is price: CK校園行動APP at Free against 關鍵英單：核心字彙2201's $7.99. CK校園行動APP also leads on update cadence (every 9 months vs every 31 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

CK校園行動APP is free to download; 關鍵英單：核心字彙2201 costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

關鍵英單：核心字彙2201 ships an update every 31 months, CK校園行動APP every 9 months. The most recent releases landed on July 4, 2026 and July 22, 2026 respectively.

## The numbers

| Metric | 關鍵英單：核心字彙2201 | CK校園行動APP |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/2201-4400/id1190075533/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 9 months** |
| Monetization | Paid | **Free** |
| Size | 296 MB | 8 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Soyong Corporation](https://appshunter.io/developer/339142397) | [CHUNG-NUNG YANG](https://appshunter.io/developer/1761081085) |

## What reviewers say

### 關鍵英單：核心字彙2201

[App page](https://appshunter.io/ios/app/2201-4400/id1190075533)

This app uses spaced repetition and the forgetting curve to help users efficiently memorize a large vocabulary. It categorizes words by theme and difficulty, offering detailed definitions, example sentences, and etymological breakdowns. Features include customizable study plans, sleep learning, and progress tracking.

**Highlights:** Spaced repetition learning system, Thematic and unit-based vocabulary organization, Detailed word information (pronunciation, definition, examples), Root, prefix, and suffix analysis for memorization, Customizable daily study plans, Sleep learning mode, Progress tracking and achievements

**In-app purchases:** none


### CK校園行動APP

[App page](https://appshunter.io/ios/app/ckapp/id6608961910)

This app is designed to simplify daily tasks and reduce stress for students, acting as a helpful guide for their academic journey. It aims to make learning more efficient and enjoyable by streamlining campus life.

**Highlights:** Simplifies daily tasks, Reduces student stress, Acts as a learning guide, Streamlines campus life, Enhances learning efficiency

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 關鍵英單：核心字彙2201 free?

關鍵英單：核心字彙2201 costs $7.99, with no in-app purchases.

### Is CK校園行動APP free?

CK校園行動APP is free to download, with no in-app purchases.

### Do 關鍵英單：核心字彙2201 or CK校園行動APP have ads?

Neither 關鍵英單：核心字彙2201 nor CK校園行動APP shows ads.

### Which is updated more often, 關鍵英單：核心字彙2201 or CK校園行動APP?

關鍵英單：核心字彙2201 ships an update every 31 months, and CK校園行動APP every 9 months. Most recently, 關鍵英單：核心字彙2201 was updated on July 4, 2026 and CK校園行動APP on July 22, 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.*