# 咔咔背单词 vs SNTWET 工程机械英语

The clearest difference is in-app purchases: SNTWET 工程机械英语 at none against 咔咔背单词's 6. SNTWET 工程机械英语 also leads on update cadence (every 4 days vs every 4 weeks). 咔咔背单词's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 咔咔背单词 sells 5 one-off in-app purchases. SNTWET 工程机械英语 asks for nothing beyond the download.

咔咔背单词 ships an update every 4 weeks, SNTWET 工程机械英语 every 4 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 咔咔背单词 | SNTWET 工程机械英语 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id6743207138/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 265 MB | 1 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Keyanqi Information Technology Co., Ltd.](https://appshunter.io/developer/1801920078) | [Zhenbo Shen](https://appshunter.io/developer/6802920280) |

## What reviewers say

### 咔咔背单词

[App page](https://appshunter.io/ios/app/id6743207138)

This app offers a unique method for memorizing vocabulary by categorizing words based on familiarity. It incorporates various learning modes, engaging games, and extensive reading materials to make language acquisition effective and enjoyable for learners of all levels.

**Highlights:** Unique familiarity-based memorization method, Multiple learning modes and fun games, Natural phonics and pronunciation training, Customizable word lists and sharing, PDF export for offline study, Extensive reading materials with integrated vocabulary

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1元试用 | $0.99 | one-time |
| 咔咔积分 | $1.99 | one-time |
| 一年会员 | $9.99 | one-time |
| 一年制会员 | $9.99 | one-time |
| 永久会员 | $14.99 | one-time |


### SNTWET 工程机械英语

[App page](https://appshunter.io/ios/app/sntwet/id6802922240)

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

**In-app purchases:** none


## Frequently asked questions

### Is 咔咔背单词 free?

咔咔背单词 is free to download, with in-app purchases available.

### Is SNTWET 工程机械英语 free?

SNTWET 工程机械英语 is free to download, with no in-app purchases.

### Do 咔咔背单词 or SNTWET 工程机械英语 have ads?

Neither 咔咔背单词 nor SNTWET 工程机械英语 shows ads.

### Which is updated more often, 咔咔背单词 or SNTWET 工程机械英语?

咔咔背单词 ships an update every 4 weeks, and SNTWET 工程机械英语 every 4 days. Most recently, 咔咔背单词 was updated on November 4, 2026 and SNTWET 工程机械英语 on October 31, 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.*