# IMPOSSIBLE RIDDLES CHALLENGE vs Who’s the Stranger?

The clearest difference is in-app purchases: IMPOSSIBLE RIDDLES CHALLENGE at none against Who’s the Stranger?'s 10. IMPOSSIBLE RIDDLES CHALLENGE also leads on ads (none vs shown) and iOS requirement (13.4 vs 15.0). Who’s the Stranger?'s advantage is update cadence (daily vs monthly). On price and device support there is nothing between them.

Both are free to download. Who’s the Stranger? sells 10 one-off in-app purchases. IMPOSSIBLE RIDDLES CHALLENGE asks for nothing beyond the download.

IMPOSSIBLE RIDDLES CHALLENGE ships an update monthly, Who’s the Stranger? daily. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | IMPOSSIBLE RIDDLES CHALLENGE | Who’s the Stranger? |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Daily** |
| Size | 88 MB | 74 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NGUYEN DUC HIEU](https://appshunter.io/developer/762617890) | [Dang Do Khanh](https://appshunter.io/developer/1799532140) |

## What reviewers say

### IMPOSSIBLE RIDDLES CHALLENGE

[App page](https://appshunter.io/ios/app/impossible-riddles-challenge/id6478904975)

**Features:** macOS Compatibility

**In-app purchases:** none


### Who’s the Stranger?

[App page](https://appshunter.io/ios/app/whos-the-stranger/id6781967369)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vietnam Places | $0.99 | one-time |
| Tech / Apps | $0.99 | one-time |
| Entertainment / Pop Culture | $0.99 | one-time |
| Holidays | $0.99 | one-time |
| Feelings / Personality | $0.99 | one-time |
| Couple / Dating | $0.99 | one-time |
| Gen Z / Memes | $0.99 | one-time |
| Team Building | $1.99 | one-time |
| Football / Sports | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is IMPOSSIBLE RIDDLES CHALLENGE free?

IMPOSSIBLE RIDDLES CHALLENGE is free to download, with no in-app purchases.

### Is Who’s the Stranger? free?

Who’s the Stranger? is free to download, with in-app purchases available.

### Do IMPOSSIBLE RIDDLES CHALLENGE or Who’s the Stranger? have ads?

Who’s the Stranger? shows ads; IMPOSSIBLE RIDDLES CHALLENGE does not.

### Which is updated more often, IMPOSSIBLE RIDDLES CHALLENGE or Who’s the Stranger??

IMPOSSIBLE RIDDLES CHALLENGE ships an update monthly, and Who’s the Stranger? daily. Most recently, IMPOSSIBLE RIDDLES CHALLENGE was updated on October 17, 2026 and Who’s the Stranger? on October 15, 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.*