# 超級單字王Pro vs 誰是臥底

The clearest difference is price: 誰是臥底 at Free against 超級單字王Pro's $8.99. 超級單字王Pro's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

誰是臥底 is free to download; 超級單字王Pro costs $8.99 up front. 誰是臥底 sells 1 in-app purchase, starting at $0.99 per month. 超級單字王Pro asks for nothing beyond the download.

超級單字王Pro ships an update every 5 weeks, 誰是臥底 every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | 超級單字王Pro | 誰是臥底 |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[4.8 (26 ratings)](https://appshunter.io/ios/app/pro/id1078553162/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 91.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Paid | — |
| Best chart rank | **#151** | — |
| Size | 201 MB | 22 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WEI CHAO CHENG](https://appshunter.io/developer/882311868) | [LiangYu Ko](https://appshunter.io/developer/1758015388) |

## What reviewers say

### 超級單字王Pro

[App page](https://appshunter.io/ios/app/pro/id1078553162)

**Currently charting:** #151 Top Paid · Trivia (US App Store)

Learn English vocabulary through engaging games and challenges. Features include interactive quizzes, spelling tests, listening exercises, and a personalized word bank. Compete with others on leaderboards and track your progress.

**Highlights:** Gamified vocabulary learning, Interactive quizzes and challenges, Personalized word bank, Real-time leaderboards, Standard pronunciation with native audio, Multiple gameplay modes

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

**In-app purchases:** none


### 誰是臥底

[App page](https://appshunter.io/ios/app/id6553973564)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 找出臥底 Pro | $0.99 | per month |


## Frequently asked questions

### Is 超級單字王Pro free?

超級單字王Pro costs $8.99, with no in-app purchases.

### Is 誰是臥底 free?

誰是臥底 is free to download, with in-app purchases available.

### Do 超級單字王Pro or 誰是臥底 have ads?

誰是臥底 shows ads; 超級單字王Pro does not.

### Which is updated more often, 超級單字王Pro or 誰是臥底?

超級單字王Pro ships an update every 5 weeks, and 誰是臥底 every 2 months. Most recently, 超級單字王Pro was updated on October 24, 2026 and 誰是臥底 on October 24, 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.*