# 知米背单词 vs 雷哥单词丨考研中高考单词宝典

The clearest difference is ratings volume: 知米背单词 at 460 against 雷哥单词丨考研中高考单词宝典's 58. 知米背单词 also leads on 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. 知米背单词 sells 12 one-off in-app purchases and 雷哥单词丨考研中高考单词宝典 sells 9 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 知米背单词 against 4.9 for 雷哥单词丨考研中高考单词宝典. That said, the two scores are not equally well evidenced: 知米背单词 has 460 ratings behind it against 58, so its average is the more settled of the two. Written reviews are what separate them: 97% of 知米背单词's written reviews are positive against 100% of 雷哥单词丨考研中高考单词宝典's.

知米背单词 ships an update every 5 weeks, 雷哥单词丨考研中高考单词宝典 every 3 weeks. The most recent releases landed on August 12, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | 知米背单词 | 雷哥单词丨考研中高考单词宝典 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (460 ratings)](https://appshunter.io/ios/app/app/id893122685/reviews) | **[4.9 (58 ratings)](https://appshunter.io/ios/app/id1375429473/reviews)** |
| Number of ratings | **460** | 58 |
| Positive reviews | 97.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 147 MB | 68 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BlueBrain Educational Technology Co., Ltd.](https://appshunter.io/developer/893122688) | [Chengdu huishen education technology co., LTD](https://appshunter.io/developer/1537057885) |

## What reviewers say

### 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


### 雷哥单词丨考研中高考单词宝典

[App page](https://appshunter.io/ios/app/id1375429473)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 412雷豆 | $0.99 | one-time |
| 1235雷豆 | $2.99 | one-time |
| 2058雷豆 | $4.99 | one-time |
| 6729雷豆 | $14.99 | one-time |
| 8789雷豆 | $19.99 | one-time |
| 17029雷豆 | $37.99 | one-time |
| 26642雷豆 | $59.99 | one-time |
| 37629雷豆 | $84.99 | one-time |
| 44496雷豆 | $99.99 | one-time |


## Frequently asked questions

### Is 知米背单词 free?

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

### Is 雷哥单词丨考研中高考单词宝典 free?

雷哥单词丨考研中高考单词宝典 is free to download, with in-app purchases available.

### Which has better reviews, 知米背单词 or 雷哥单词丨考研中高考单词宝典?

雷哥单词丨考研中高考单词宝典 is rated higher. 知米背单词 averages 4.8 out of 5 from 460 ratings, while 雷哥单词丨考研中高考单词宝典 averages 4.9 from 58 ratings.

### Do 知米背单词 or 雷哥单词丨考研中高考单词宝典 have ads?

Neither 知米背单词 nor 雷哥单词丨考研中高考单词宝典 shows ads.

### Which is updated more often, 知米背单词 or 雷哥单词丨考研中高考单词宝典?

知米背单词 ships an update every 5 weeks, and 雷哥单词丨考研中高考单词宝典 every 3 weeks. Most recently, 知米背单词 was updated on August 12, 2026 and 雷哥单词丨考研中高考单词宝典 on September 8, 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.*