# X2 Blocks vs Diffworld

The clearest difference is in-app purchases: Diffworld at none against X2 Blocks's 11. Diffworld also leads on update cadence (every 3 days vs fortnightly). X2 Blocks's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. X2 Blocks sells 11 in-app purchases, starting at $3.49 per month. Diffworld asks for nothing beyond the download.

X2 Blocks ships an update fortnightly, Diffworld every 3 days. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | X2 Blocks | Diffworld |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (79K ratings)](https://appshunter.io/ios/app/x2-blocks-number-block-puzzle/id1480338372/reviews)** | — |
| Number of ratings | **79K** | — |
| Positive reviews | 55.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 246 MB | 27 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Inspired Square FZE](https://appshunter.io/developer/1480338371) | [SUNGWOO JUNG](https://appshunter.io/developer/6793244122) |

## What reviewers say

### X2 Blocks

[App page](https://appshunter.io/ios/app/x2-blocks-number-block-puzzle/id1480338372)

This addictive puzzle game challenges you to merge numbered blocks by dragging and shooting. Progress through increasingly higher numbers, sharpen your mind, and relieve stress with its elegant design and simple controls.

**Highlights:** Merge numbered blocks, Minimalistic and elegant design, Smooth and simple controls, Automatic game save, Global leaderboards, No time limits, No Wi-Fi required

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $3.49 | per month |
| 12 Months | $14.99 | per year |
| Handful of Diamonds | $0.99 | one-time |
| Pouch of Diamonds | $2.99 | one-time |
| Bucket of Diamonds | $4.99 | one-time |
| AdFree Forever | $9.99 | one-time |
| Stash of Diamonds | $9.99 | one-time |
| X2 Premium | $19.99 | one-time |
| Bank of Diamonds | $24.99 | one-time |
| Vault of Diamonds | $49.99 | one-time |
| Mountain of Diamonds | $99.99 | one-time |

**What reviewers like**

- 🚀 Simple and straightforward
- 🕹️ Relaxing gameplay
- 👍 Addictive and engaging
- ⏱️ No time pressure
- 💎 Rewarding for watching ads

**What reviewers complain about**

- 💢 Too many disruptive ads
- 🐛 Frequent crashes and freezes
- 🔋 Drains device battery
- 💰 In-app purchases not worth it
- 🤔 Confusing ad-free purchase

**Reported bugs**

- Ads causing game to freeze or reset
- Inconsistent block behavior
- Diamonds not rewarded properly
- Syncing issues across devices

**Requested features**

- More levels and challenges
- Ability to save/restore progress
- Customization options
- Leaderboard and social features
- Improved ad implementation


### Diffworld

[App page](https://appshunter.io/ios/app/diffworld-spot-the-difference/id6797232554)

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

**In-app purchases:** none


## Frequently asked questions

### Is X2 Blocks free?

X2 Blocks is free to download, with in-app purchases available.

### Is Diffworld free?

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

### Do X2 Blocks or Diffworld have ads?

Both X2 Blocks and Diffworld show ads.

### Which is updated more often, X2 Blocks or Diffworld?

X2 Blocks ships an update fortnightly, and Diffworld every 3 days. Most recently, X2 Blocks was updated on October 24, 2026 and Diffworld on October 17, 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.*