# Light Up vs Merge Stack

Light Up and Merge Stack are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 26, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Light Up | Merge Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/light-up-logic-puzzle/id6780401631/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 206 MB | 238 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oakever Games](https://appshunter.io/developer/1658671470) | [Kite Games](https://appshunter.io/developer/1878111512) |

## What reviewers say

### Light Up

[App page](https://appshunter.io/ios/app/light-up-logic-puzzle/id6780401631)

This logic puzzle game combines adorable cats with deduction challenges. Place cats on a grid to claim territory, using number clues and strategic paw prints to solve each unique puzzle. Enjoy a relaxing, stress-free experience with no timers.

**Highlights:** Healing cat puzzles, Elegant logic deduction, Smooth difficulty curve, Offline play, Minimal UI, No stress, no timers

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

**In-app purchases:** none


### Merge Stack

[App page](https://appshunter.io/ios/app/merge-stack-color-block/id6788709551)

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

**In-app purchases:** none


## Frequently asked questions

### Is Light Up free?

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

### Is Merge Stack free?

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

### Do Light Up or Merge Stack have ads?

Both Light Up and Merge Stack show ads.

### Which is updated more often, Light Up or Merge Stack?

Light Up ships an update every 2 months, and Merge Stack every 2 months. Most recently, Light Up was updated on October 26, 2026 and Merge Stack on October 4, 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.*