# 六级CET vs 知米背单词

The clearest difference is rating: 知米背单词 at 4.8 against 六级CET's 4.0. 知米背单词 also leads on ratings volume (460 vs 1) and review sentiment (97% vs 75%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 六级CET sells 1 one-off in-app purchase and 知米背单词 sells 12 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

知米背单词 holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: 知米背单词 has 460 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 75% of 六级CET's written reviews are positive against 97% of 知米背单词's.

六级CET ships an update every 3 weeks, 知米背单词 every 5 weeks. The most recent releases landed on September 9, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | 六级CET | 知米背单词 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/cet-6hd/id688093406/reviews) | **[4.8 (460 ratings)](https://appshunter.io/ios/app/app/id893122685/reviews)** |
| Number of ratings | 1 | **460** |
| Positive reviews | 75.0% of reviews | **97.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 97 MB | 147 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [水萍 林](https://appshunter.io/developer/664555715) | [BlueBrain Educational Technology Co., Ltd.](https://appshunter.io/developer/893122688) |

## What reviewers say

### 六级CET

[App page](https://appshunter.io/ios/app/cet-6hd/id688093406)

This app uses the Ebbinghaus forgetting curve and user interaction to optimize vocabulary learning. It adapts study and review schedules based on individual memory patterns for long-term retention. All content is available offline.

**Highlights:** Ebbinghaus memory curve integration, Personalized learning schedules, Offline access to all content, Interactive learning methods, Focus on long-term memory retention

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 六级词汇完整版 | $2.99 | one-time |


### 知米背单词

[App page](https://appshunter.io/ios/app/app/id893122685)

This app offers a fun and effective way to memorize English vocabulary, with seven mnemonic methods and scientific review techniques. It also includes grammar lessons and reading practice with authentic materials.

**Highlights:** Seven mnemonic methods for memorization, Scientific review in context, Comprehensive study data statistics, 10-hour grammar mastery, Practice with authentic reading materials, Daily bilingual news and classic books

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 600知米粒 | $0.99 | one-time |
| 词根词缀助记1个月 | $0.99 | one-time |
| 单词助记服务(1个月) | $1.99 | one-time |
| 1800知米粒 | $2.99 | one-time |
| 单词配图3个月 | $2.99 | one-time |
| 词根词缀助记3个月 | $2.99 | one-time |
| 3000知米粒 | $3.99 | one-time |
| 6800知米粒 | $9.99 | one-time |
| 单词助记服务(12个月) | $9.99 | one-time |
| 单词配图永久 | $12.99 | one-time |
| 词根词缀助记永久 | $12.99 | one-time |
| 单词助记服务(永久) | $12.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient word learning
- 💡 Helpful word association features
- 🗣️ Good pronunciation examples
- 📚 Extensive word library

**What reviewers complain about**

- 🐛 Occasional bugs or crashes
- 💰 Some features require paid subscription
- 🖥️ Lack of iPad support

**Reported bugs**

- Login issues on certain devices
- Inconsistent word definitions

**Requested features**

- Improved multi-device synchronization
- More customization options
- Integration with other learning resources


## Frequently asked questions

### Is 六级CET free?

六级CET is free to download, with in-app purchases available.

### Is 知米背单词 free?

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

### Which has better reviews, 六级CET or 知米背单词?

知米背单词 is rated higher. 六级CET averages 4.0 out of 5 from 1 ratings, while 知米背单词 averages 4.8 from 460 ratings.

### Do 六级CET or 知米背单词 have ads?

Neither 六级CET nor 知米背单词 shows ads.

### Which is updated more often, 六级CET or 知米背单词?

六级CET ships an update every 3 weeks, and 知米背单词 every 5 weeks. Most recently, 六级CET was updated on September 9, 2026 and 知米背单词 on August 12, 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.*