# Undead castle vs X

The clearest difference is update cadence: X at every 2 weeks against Undead castle's every 11 months. X also leads on iOS requirement (10.0 vs 12.0). Undead castle's advantage is ratings volume (7 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Undead castle against 5.0 for X. That said, the two scores are not equally well evidenced: Undead castle has 7 ratings behind it against 1, so its average is the more settled of the two.

Undead castle ships an update every 11 months, X every 2 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Undead castle | X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/undead-castle/id978448091/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/x-ray-escape/id1514525180/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 39 MB | 115 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [娟 杜](https://appshunter.io/developer/974748350) | [庆龙 刘](https://appshunter.io/developer/1462713107) |

## What reviewers say

### Undead castle

[App page](https://appshunter.io/ios/app/undead-castle/id978448091)

A casual puzzle game where the goal is to open doors by solving hidden object puzzles. It offers a variety of challenging brain teasers and uses different interaction methods like clicking and sliding. Continuously updated with new puzzles, it's a free and addictive experience.

**Highlights:** Room escape gameplay, Hidden object puzzles, Challenging brain teasers, Multiple interaction methods, Constantly updated puzzles, Free to play

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

**In-app purchases:** none


### X

[App page](https://appshunter.io/ios/app/x-ray-escape/id1514525180)

Use an X-ray scanner to see through objects and discover hidden clues. Find the key to unlock the door and help the girl escape the room. A unique puzzle game with a visual twist.

**Highlights:** X-ray scanner ability, See through objects, Find hidden clues, Solve escape room puzzles, Unlock doors

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Undead castle free?

Undead castle is free to download, with no in-app purchases.

### Is X free?

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

### Which has better reviews, Undead castle or X?

Undead castle and X are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.

### Do Undead castle or X have ads?

Neither Undead castle nor X shows ads.

### Which is updated more often, Undead castle or X?

Undead castle ships an update every 11 months, and X every 2 weeks. Most recently, Undead castle was updated on November 1, 2026 and X on November 3, 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.*