# Merge Brain vs Keycap Puzzle

The clearest difference is in-app purchases: Keycap Puzzle at none against Merge Brain's 9. Keycap Puzzle also leads on update cadence (daily vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Merge Brain sells 9 one-off in-app purchases. Keycap Puzzle asks for nothing beyond the download.

Merge Brain ships an update every 6 weeks, Keycap Puzzle daily. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Merge Brain | Keycap Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (185 ratings)](https://appshunter.io/ios/app/merge-brain-2248/id6449523076/reviews)** | — |
| Number of ratings | **185** | — |
| Positive reviews | 54.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 278 MB | 61 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SUPERBOX. Inc](https://appshunter.io/developer/1165756567) | [Jiho Hong](https://appshunter.io/developer/1018746530) |

## What reviewers say

### Merge Brain

[App page](https://appshunter.io/ios/app/merge-brain-2248/id6449523076)

A minimalist puzzle game where you link blocks with the same numbers to create higher numbers. Sharpen your mind and concentration with increasingly challenging levels, aiming for the highest score.

**Highlights:** Link same numbered blocks, Create higher number blocks, Minimalist and modern design, Simple controls, challenging gameplay, Automatic data save, World ranking, Infinite time

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diamond 1000 | $0.99 | one-time |
| Diamond 2500 | $2.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Diamond 6000 | $4.99 | one-time |
| Diamond Piggy Bank | $4.99 | one-time |
| Diamond 13000 | $9.99 | one-time |
| Diamond 35000 | $29.99 | one-time |
| Diamond 60000 | $49.99 | one-time |
| Diamond 100000 | $99.99 | one-time |

**What reviewers like**

- 👍 Fun and enjoyable gameplay
- ✅ No Wi-Fi required
- 👍 Good amount of ads (for some)
- 💡 Suggestion for higher number tiles (2048, 4096, 8192)
- 🚀 Reached high scores (Septillion, Undecillion)

**What reviewers complain about**

- ⏰ Stingy 24-hour reward timer
- 🐛 Game freezes after update
- 🐛 Game freezes during long play sessions
- 🐛 Game lagging
- 🐛 Paid movements reversed overnight

**Reported bugs**

- Game gets stuck and screen freezes for a minute or two after recent update
- Game freezes every time playing for long periods
- Game keeps lagging
- Paid Movements reversed overnight
- Ad pops up and cannot be closed, requiring game exit

**Requested features**

- Update reward timer to standard daily reset
- Add Infinity tile
- Make game more fun with updates
- Change 2K, 4K, 8K to 2048, 4096, 8192
- Add an end goal or finish line to the game


### Keycap Puzzle

[App page](https://appshunter.io/ios/app/keycap-puzzle/id6804330071)

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

**In-app purchases:** none


## Frequently asked questions

### Is Merge Brain free?

Merge Brain is free to download, with in-app purchases available.

### Is Keycap Puzzle free?

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

### Do Merge Brain or Keycap Puzzle have ads?

Both Merge Brain and Keycap Puzzle show ads.

### Which is updated more often, Merge Brain or Keycap Puzzle?

Merge Brain ships an update every 6 weeks, and Keycap Puzzle daily. Most recently, Merge Brain was updated on October 24, 2026 and Keycap Puzzle on October 13, 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.*