# 六级英语词汇YY背单词核心专业版HD vs 不背单词

The clearest difference is rating: 不背单词 at 4.8 against 六级英语词汇YY背单词核心专业版HD's 3.0. 不背单词 also leads on ratings volume (3.6K vs 2) and review sentiment (95% vs 85%). 六级英语词汇YY背单词核心专业版HD's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (11.0 vs 13.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 六级英语词汇YY背单词核心专业版HD sells 1 one-off in-app purchase and 不背单词 sells 100 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

不背单词 holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: 不背单词 has 3.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 85% of 六级英语词汇YY背单词核心专业版HD's written reviews are positive against 95% of 不背单词's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 18, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 六级英语词汇YY背单词核心专业版HD | 不背单词 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/yyhd/id616042594/reviews) | **[4.8 (3.6K ratings)](https://appshunter.io/ios/app/id698570469/reviews)** |
| Number of ratings | 2 | **3.6K** |
| Positive reviews | 85.0% of reviews | **94.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 97 MB | 168 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [怡怡 沈](https://appshunter.io/developer/582667064) | [Beijing Is-Cool Technology Co., Ltd](https://appshunter.io/developer/1089038448) |

## What reviewers say

### 六级英语词汇YY背单词核心专业版HD

[App page](https://appshunter.io/ios/app/yyhd/id616042594)

This app helps users memorize English vocabulary for the CET-6 exam using the Ebbinghaus forgetting curve and a smart memory engine. It offers offline access, detailed word explanations, and personalized learning plans to achieve long-term memory.

**Highlights:** Ebbinghaus forgetting curve method, Smart memory engine for efficiency, Offline access to all content, Detailed word explanations and examples, Intelligent task management, Vocabulary collection and error tracking

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| YY背单词CET六级词汇完整版 | $2.99 | one-time |


### 不背单词

[App page](https://appshunter.io/ios/app/id698570469)

Learn English vocabulary with over 1.5 million native speaker example sentences. This app uses a science-based memory curve, root analysis, and authentic phrases to help you remember words effectively. It covers all learning stages and exam needs.

**Highlights:** 1.5 million+ native speaker example sentences, 50,000+ phrase collocations, 2,000+ root and affix lessons, 5,000+ derivation trees, Authentic Collins English-Chinese dictionary, All-stage vocabulary banks, Ebbinghaus memory curve review

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

**In-app purchases (100)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 酷币包1 | $0.99 | one-time |
| 充值4 | $0.99 | one-time |
| 充值3 | $0.99 | one-time |
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| 充值1 | $0.99 | one-time |
| 充值9.9 | $0.99 | one-time |
| 充值8 | $0.99 | one-time |
| 充值2 | $0.99 | one-time |
| 充值9 | $0.99 | one-time |
| 充值7 | $0.99 | one-time |
| 酷币包2 | $1.99 | one-time |
| 充值15 | $1.99 | one-time |
| 充值12 | $1.99 | one-time |
| 充值11 | $1.99 | one-time |
| 充值13 | $1.99 | one-time |
| 充值16 | $1.99 | one-time |
| 酷币包3 | $2.99 | one-time |
| 充值19.9 | $2.99 | one-time |
| 充值20 | $2.99 | one-time |
| 充值24 | $2.99 | one-time |
| 充值19.8 | $2.99 | one-time |
| 充值18 | $2.99 | one-time |
| 充值19 | $2.99 | one-time |
| 充值21 | $2.99 | one-time |
| 酷币包5 | $3.99 | one-time |
| 充值30 | $3.99 | one-time |
| 充值26 | $3.99 | one-time |
| 充值28 | $3.99 | one-time |
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| 充值25 | $3.99 | one-time |
| 充值37 | $4.99 | one-time |
| 充值35 | $4.99 | one-time |
| 充值34 | $4.99 | one-time |
| 充值36 | $4.99 | one-time |
| 充值32 | $4.99 | one-time |
| 充值38 | $4.99 | one-time |
| 酷币包6 | $5.99 | one-time |
| 酷币包7 | $5.99 | one-time |
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| 充值45 | $5.99 | one-time |
| 酷币包8 | $6.99 | one-time |
| 充值47 | $6.99 | one-time |
| 充值46 | $6.99 | one-time |
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| 充值49 | $6.99 | one-time |
| 充值57 | $7.99 | one-time |
| 充值58 | $7.99 | one-time |
| 酷币包9 | $8.99 | one-time |
| 酷币包12 | $9.99 | one-time |
| 充值67 | $9.99 | one-time |
| 充值70 | $9.99 | one-time |
| 充值74 | $9.99 | one-time |
| 充值73 | $9.99 | one-time |
| 充值75 | $9.99 | one-time |
| 充值76 | $9.99 | one-time |
| 充值85 | $11.99 | one-time |
| 酷币包13 | $12.99 | one-time |
| 充值94 | $12.99 | one-time |
| 充值119 | $17.99 | one-time |
| 充值116 | $17.99 | one-time |
| 酷币包20 | $19.99 | one-time |
| 酷币包22 | $19.99 | one-time |
| 充值142 | $19.99 | one-time |
| 充值147 | $19.99 | one-time |
| 充值149 | $19.99 | one-time |
| 充值129 | $19.99 | one-time |
| 充值131 | $19.99 | one-time |
| 充值139 | $19.99 | one-time |
| 酷币包23 | $22.99 | one-time |
| 充值160 | $22.99 | one-time |
| 充值158 | $22.99 | one-time |
| 充值169 | $24.99 | one-time |
| 充值177 | $24.99 | one-time |
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| 充值209 | $29.99 | one-time |
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| 充值233 | $34.99 | one-time |
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| 充值248 | $34.99 | one-time |
| 酷币包19 | $39.99 | one-time |
| 酷币包 31 | $39.99 | one-time |
| 充值293 | $39.99 | one-time |
| 充值298 | $39.99 | one-time |
| 充值268 | $39.99 | one-time |
| 充值273 | $39.99 | one-time |
| 充值289 | $39.99 | one-time |
| 充值279 | $39.99 | one-time |
| 充值283 | $39.99 | one-time |
| 充值288 | $39.99 | one-time |
| 充值388 | $59.99 | one-time |
| 酷币包 34 | $69.99 | one-time |
| 充值488 | $69.99 | one-time |

**What reviewers like**

- 🌟 Comprehensive vocabulary coverage
- 👍 Intuitive and user-friendly interface
- 🎬 Helpful example sentences from movies/TV
- 💡 Effective memorization techniques
- 🎯 Customizable word lists and study plans

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔊 Inconsistent audio volume for word pronunciations
- 🔍 Limited search and filtering options
- 🖼️ Outdated or unappealing visual design
- 🕰️ Repetitive review schedule can feel tedious

**Reported bugs**

- Login issues for users with non-Chinese phone numbers
- Compatibility problems on newer iOS/Android devices
- Unreliable syncing of progress across multiple devices

**Requested features**

- Ability to import/export custom word lists
- Integration with other language learning resources
- More personalized learning algorithms and recommendations
- Enhanced social features for group/team learning
- Expanded support for non-English vocabulary


## Frequently asked questions

### Is 六级英语词汇YY背单词核心专业版HD free?

六级英语词汇YY背单词核心专业版HD is free to download, with in-app purchases available.

### Is 不背单词 free?

不背单词 is free to download, with in-app purchases available.

### Which has better reviews, 六级英语词汇YY背单词核心专业版HD or 不背单词?

不背单词 is rated higher. 六级英语词汇YY背单词核心专业版HD averages 3.0 out of 5 from 2 ratings, while 不背单词 averages 4.8 from 3.6K ratings.

### Do 六级英语词汇YY背单词核心专业版HD or 不背单词 have ads?

Neither 六级英语词汇YY背单词核心专业版HD nor 不背单词 shows ads.

### Which is updated more often, 六级英语词汇YY背单词核心专业版HD or 不背单词?

六级英语词汇YY背单词核心专业版HD ships an update every 3 weeks, and 不背单词 every 3 weeks. Most recently, 六级英语词汇YY背单词核心专业版HD was updated on October 18, 2026 and 不背单词 on October 23, 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.*