# Solideck vs Merge Stack

The clearest difference is in-app purchases: Merge Stack at none against Solideck's 1. Solideck's advantage is update cadence (every 5 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Solideck sells 1 one-off in-app purchase. Merge Stack asks for nothing beyond the download.

Solideck ships an update every 5 days, Merge Stack every 2 months. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Solideck | Merge Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 45 MB | 238 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CometStudio(KR)](https://appshunter.io/developer/1329844522) | [Kite Games](https://appshunter.io/developer/1878111512) |

## What reviewers say

### Solideck

[App page](https://appshunter.io/ios/app/solideck/id6741893005)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### 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 Solideck free?

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

### Is Merge Stack free?

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

### Do Solideck or Merge Stack have ads?

Both Solideck and Merge Stack show ads.

### Which is updated more often, Solideck or Merge Stack?

Solideck ships an update every 5 days, and Merge Stack every 2 months. Most recently, Solideck was updated on October 2, 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.*