# 不背单词 vs 知米背单词

The clearest difference is ratings volume: 不背单词 at 3.5K against 知米背单词's 460. 知米背单词's advantage is iOS requirement (9.0 vs 13.0). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. 不背单词 sells 100 one-off in-app purchases 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.

On the App Store both sit at effectively the same score — 4.8 for 不背单词 against 4.8 for 知米背单词. That said, the two scores are not equally well evidenced: 不背单词 has 3.5K ratings behind it against 460, so its average is the more settled of the two. Written reviews are what separate them: 95% of 不背单词's written reviews are positive against 97% of 知米背单词's.

不背单词 ships an update every 3 weeks, 知米背单词 every 5 weeks. The most recent releases landed on September 22, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | 不背单词 | 知米背单词 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (3.5K ratings)](https://appshunter.io/ios/app/id698570469/reviews) | [4.8 (460 ratings)](https://appshunter.io/ios/app/app/id893122685/reviews) |
| Number of ratings | **3.5K** | 460 |
| Positive reviews | 94.6% 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 | 168 MB | 147 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 9+ | 4+ |
| Developer | [Beijing Is-Cool Technology Co., Ltd](https://appshunter.io/developer/1089038448) | [BlueBrain Educational Technology Co., Ltd.](https://appshunter.io/developer/893122688) |

## What reviewers say

### 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 |
| 充值6 | $0.99 | one-time |
| 充值5 | $0.99 | one-time |
| 充值10 | $0.99 | one-time |
| 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 |
| 充值31 | $3.99 | one-time |
| 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 |
| 充值41 | $5.99 | one-time |
| 充值39 | $5.99 | one-time |
| 充值43 | $5.99 | one-time |
| 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 |
| 充值48 | $6.99 | one-time |
| 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 |
| 充值178 | $24.99 | one-time |
| 充值176 | $24.99 | one-time |
| 充值209 | $29.99 | one-time |
| 充值220 | $29.99 | one-time |
| 充值228 | $29.99 | one-time |
| 充值233 | $34.99 | one-time |
| 充值250 | $34.99 | one-time |
| 充值238 | $34.99 | one-time |
| 充值249 | $34.99 | one-time |
| 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


### 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 不背单词 free?

不背单词 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, 不背单词 or 知米背单词?

不背单词 and 知米背单词 are both rated 4.8 out of 5 on the App Store, from 3.5K and 460 ratings respectively.

### Do 不背单词 or 知米背单词 have ads?

Neither 不背单词 nor 知米背单词 shows ads.

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

不背单词 ships an update every 3 weeks, and 知米背单词 every 5 weeks. Most recently, 不背单词 was updated on September 22, 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.*