# 四级词汇CET4核心必考单词专业版HD vs 英语中阶

The clearest difference is ads: 四级词汇CET4核心必考单词专业版HD at none against 英语中阶's shown. 四级词汇CET4核心必考单词专业版HD also leads on update cadence (monthly vs every 14 months) and monetization model (free vs free with in-app purchases). 英语中阶's advantage is review sentiment (100% vs 83%) and ratings volume (90 vs 8). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. 四级词汇CET4核心必考单词专业版HD sells 1 one-off in-app purchase and 英语中阶 sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for 四级词汇CET4核心必考单词专业版HD against 4.9 for 英语中阶. That said, the two scores are not equally well evidenced: 英语中阶 has 90 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 83% of 四级词汇CET4核心必考单词专业版HD's written reviews are positive against 100% of 英语中阶's.

四级词汇CET4核心必考单词专业版HD ships an update monthly, 英语中阶 every 14 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 四级词汇CET4核心必考单词专业版HD | 英语中阶 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/cet4hd/id616011687/reviews)** | [4.9 (90 ratings)](https://appshunter.io/ios/app/id1636891534/reviews) |
| Number of ratings | 8 | **90** |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 14 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 102 MB | 405 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [怡怡 沈](https://appshunter.io/developer/582667064) | [彬彬 李](https://appshunter.io/developer/1335084322) |

## What reviewers say

### 四级词汇CET4核心必考单词专业版HD

[App page](https://appshunter.io/ios/app/cet4hd/id616011687)

This app helps users memorize English vocabulary for the CET-4 exam using the Ebbinghaus forgetting curve and a personalized learning sequence. It offers offline access, detailed word explanations, and smart task management for efficient long-term memory.

**Highlights:** Ebbinghaus forgetting curve learning, Personalized memory sequence adjustment, Offline vocabulary learning, Detailed word explanations with audio, Smart task management, Word collection and error tracking

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| YY背单词CET四级词汇完整版EN | $2.99 | one-time |


### 英语中阶

[App page](https://appshunter.io/ios/app/id1636891534)

This app offers a comprehensive self-study experience for English learners focusing on the second book of the New Concept English series. It provides detailed explanations, synchronized audio and text, adjustable playback speeds, and practice exercises with error analysis.

**Highlights:** Full-screen sentence-by-sentence explanations, Synchronized audio and text, Adjustable playback speed, Practice exercises with error analysis, Lock screen playback, Font size adjustment

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去广告功能 | $1.99 | one-time |
| 开通全部课程 | $2.99 | one-time |

**What reviewers like**

- 👍 Excellent explanations
- 👍 Very practical for beginners
- 👍 Great learning tool
- 👍 Convenient and detailed explanations
- 👍 Clear and thorough explanations

**What reviewers complain about**

- 🤔 Wish for a complete set
- 🤔 Suggestion for larger font size
- 🤔 Suggestion for tap-to-search feature
- 🤔 Suggestion for American accent

**Requested features**

- Complete set of courses
- Larger font size
- Tap-to-search for words
- American accent option


## Frequently asked questions

### Is 四级词汇CET4核心必考单词专业版HD free?

四级词汇CET4核心必考单词专业版HD is free to download, with in-app purchases available.

### Is 英语中阶 free?

英语中阶 is free to download, with in-app purchases available.

### Which has better reviews, 四级词汇CET4核心必考单词专业版HD or 英语中阶?

四级词汇CET4核心必考单词专业版HD is rated higher. 四级词汇CET4核心必考单词专业版HD averages 5.0 out of 5 from 8 ratings, while 英语中阶 averages 4.9 from 90 ratings.

### Do 四级词汇CET4核心必考单词专业版HD or 英语中阶 have ads?

英语中阶 shows ads; 四级词汇CET4核心必考单词专业版HD does not.

### Which is updated more often, 四级词汇CET4核心必考单词专业版HD or 英语中阶?

四级词汇CET4核心必考单词专业版HD ships an update monthly, and 英语中阶 every 14 months. Most recently, 四级词汇CET4核心必考单词专业版HD was updated on November 1, 2026 and 英语中阶 on November 3, 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.*