# 誰是臥底 vs 海龜湯

The clearest difference is in-app purchases: 海龜湯 at none against 誰是臥底's 1. 海龜湯 also leads on ads (none vs shown) and update cadence (every 3 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 誰是臥底 sells 1 in-app purchase, starting at $0.99 per month. 海龜湯 asks for nothing beyond the download.

誰是臥底 ships an update every 2 months, 海龜湯 every 3 days. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 誰是臥底 | 海龜湯 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 22 MB | 1 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [LiangYu Ko](https://appshunter.io/developer/1758015388) | [Yichun Wang](https://appshunter.io/developer/1874229860) |

## What reviewers say

### 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 |


### 海龜湯

[App page](https://appshunter.io/ios/app/ai/id6763352851)

Engage in a classic lateral thinking puzzle game where you unravel bizarre stories by asking yes/no questions. Piece together clues to discover hidden truths in a variety of word-of-mouth and new mystery scenarios. Ideal for solo play or group brain-twisting fun.

**Highlights:** Lateral thinking puzzles, Yes/No question format, Variety of mystery stories, Solo or group play, Brain-twisting fun

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

**In-app purchases:** none


## Frequently asked questions

### Is 誰是臥底 free?

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

### Is 海龜湯 free?

海龜湯 is free to download, with no in-app purchases.

### Do 誰是臥底 or 海龜湯 have ads?

誰是臥底 shows ads; 海龜湯 does not.

### Which is updated more often, 誰是臥底 or 海龜湯?

誰是臥底 ships an update every 2 months, and 海龜湯 every 3 days. Most recently, 誰是臥底 was updated on October 24, 2026 and 海龜湯 on October 11, 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.*