# 單字雪球 vs 英文慣用語超強版

單字雪球 and 英文慣用語超強版 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 單字雪球 sells 1 one-off in-app purchase and 英文慣用語超強版 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

單字雪球 ships an update every 4 days, 英文慣用語超強版 every 8 days. Both last shipped on November 6, 2026.

## The numbers

| Metric | 單字雪球 | 英文慣用語超強版 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/7000/id6799845340/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 8 days |
| Monetization | Free | — |
| Size | 34 MB | 120 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CHENG-LI CHANG](https://appshunter.io/developer/6799845342) | [SHIH WEI CHEN](https://appshunter.io/developer/6808128689) |

## What reviewers say

### 單字雪球

[App page](https://appshunter.io/ios/app/7000/id6799845340)

This app uses spaced repetition to help you master difficult vocabulary. It offers multiple learning modes, including flashcards and quizzes, and includes a large built-in dictionary with example sentences. Progress is synced via iCloud, and the app is designed for users who already know many words.

**Highlights:** Spaced Repetition System (SRS), 18,000+ word built-in vocabulary, Four learning modes: read, quiz, spell, sprint, Morphology lookup and reverse Chinese lookup, Integrated Cambridge Dictionary, iCloud progress synchronization, Home and lock screen widgets

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 記憶線索 | $2.99 | one-time |


### 英文慣用語超強版

[App page](https://appshunter.io/ios/app/id6813087959)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完整片語庫（152 個慣用語） | $9.99 | one-time |


## Frequently asked questions

### Is 單字雪球 free?

單字雪球 is free to download, with in-app purchases available.

### Is 英文慣用語超強版 free?

英文慣用語超強版 is free to download, with in-app purchases available.

### Do 單字雪球 or 英文慣用語超強版 have ads?

Neither 單字雪球 nor 英文慣用語超強版 shows ads.

### Which is updated more often, 單字雪球 or 英文慣用語超強版?

單字雪球 ships an update every 4 days, and 英文慣用語超強版 every 8 days. Most recently, 單字雪球 was updated on November 6, 2026 and 英文慣用語超強版 on November 6, 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.*