# 出賢文教 vs 單字雪球

The clearest difference is in-app purchases: 出賢文教 at none against 單字雪球's 1. 出賢文教 also leads on iOS requirement (15.0 vs 17.0). 單字雪球's advantage is update cadence (every 4 days vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. 單字雪球 sells 1 one-off in-app purchase. 出賢文教 asks for nothing beyond the download.

出賢文教 ships an update every 16 months, 單字雪球 every 4 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 出賢文教 | 單字雪球 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/7000/id6799845340/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 197 MB | 34 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chi Hsien Lai](https://appshunter.io/developer/1039759515) | [CHENG-LI CHANG](https://appshunter.io/developer/6799845342) |

## What reviewers say

### 出賢文教

[App page](https://appshunter.io/ios/app/id6748899871)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 出賢文教 free?

出賢文教 is free to download, with no in-app purchases.

### Is 單字雪球 free?

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

### Do 出賢文教 or 單字雪球 have ads?

Neither 出賢文教 nor 單字雪球 shows ads.

### Which is updated more often, 出賢文教 or 單字雪球?

出賢文教 ships an update every 16 months, and 單字雪球 every 4 days. Most recently, 出賢文教 was updated on November 8, 2026 and 單字雪球 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.*