# 知米背单词 vs 英语词根词缀手册

The clearest difference is ads: 知米背单词 at none against 英语词根词缀手册's shown. 知米背单词 also leads on ratings volume (460 vs 5) and iOS requirement (9.0 vs 15.0). 英语词根词缀手册's advantage is update cadence (every 10 days vs every 5 weeks). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. 知米背单词 sells 12 one-off in-app purchases and 英语词根词缀手册 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 — 4.8 for 知米背单词 against 4.8 for 英语词根词缀手册. That said, the two scores are not equally well evidenced: 知米背单词 has 460 ratings behind it against 5, so its average is the more settled of the two.

知米背单词 ships an update every 5 weeks, 英语词根词缀手册 every 10 days. The most recent releases landed on August 12, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | 知米背单词 | 英语词根词缀手册 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (460 ratings)](https://appshunter.io/ios/app/app/id893122685/reviews) | [4.8 (5 ratings)](https://appshunter.io/ios/app/id1125810674/reviews) |
| Number of ratings | **460** | 5 |
| Positive reviews | 97.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 147 MB | 42 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BlueBrain Educational Technology Co., Ltd.](https://appshunter.io/developer/893122688) | [涛 殷](https://appshunter.io/developer/478791127) |

## 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


### 英语词根词缀手册

[App page](https://appshunter.io/ios/app/id1125810674)

Learn English vocabulary by understanding root words, prefixes, and suffixes. This app helps you decipher new words by breaking them down into their constituent parts, making memorization more effective and reducing the fear of encountering unfamiliar terms.

**Highlights:** Search roots, prefixes, and suffixes by letter, List of common roots, prefixes, and suffixes, Understand word formation, Add roots/suffixes to personal dictionary, English explanations for roots/suffixes, English learning resources

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RMB 18 - Ad Free | $2.99 | one-time |
| RMB30- content text share | $4.99 | 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 英语词根词缀手册 free?

英语词根词缀手册 is free to download, with in-app purchases available.

### Which has better reviews, 知米背单词 or 英语词根词缀手册?

知米背单词 and 英语词根词缀手册 are both rated 4.8 out of 5 on the App Store, from 460 and 5 ratings respectively.

### Do 知米背单词 or 英语词根词缀手册 have ads?

英语词根词缀手册 shows ads; 知米背单词 does not.

### Which is updated more often, 知米背单词 or 英语词根词缀手册?

知米背单词 ships an update every 5 weeks, and 英语词根词缀手册 every 10 days. Most recently, 知米背单词 was updated on August 12, 2026 and 英语词根词缀手册 on June 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*