# 知米背单词 vs 默默背单词

The clearest difference is update cadence: 知米背单词 at every 5 weeks against 默默背单词's every 12 months. 知米背单词 also leads on device support and iOS requirement (9.0 vs 13.0). On price and in-app purchases there is nothing between them.

Both are free to download. 知米背单词 sells 12 one-off in-app purchases and 默默背单词 sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

知米背单词 ships an update every 5 weeks, 默默背单词 every 12 months. The most recent releases landed on October 8, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 知米背单词 | 默默背单词 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (460 ratings)](https://appshunter.io/ios/app/app/id893122685/reviews)** | — |
| Number of ratings | **460** | — |
| Positive reviews | 97.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | **Every 5 weeks** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 147 MB | 14 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | — |
| Age rating | 4+ | 4+ |
| Developer | [BlueBrain Educational Technology Co., Ltd.](https://appshunter.io/developer/893122688) | [慧霞 龙](https://appshunter.io/developer/1738399667) |

## 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


### 默默背单词

[App page](https://appshunter.io/ios/app/id6503638764)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 词库周会员 | $2.99 | per 7 days |
| 词库月会员 | $4.99 | per month |


## 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 默默背单词 free?

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

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

知米背单词 ships an update every 5 weeks, and 默默背单词 every 12 months. Most recently, 知米背单词 was updated on October 8, 2026 and 默默背单词 on September 15, 2026.

---

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