# Planet Merge vs Stack by Stack!

The clearest difference is in-app purchases: Stack by Stack! at none against Planet Merge's 1. Stack by Stack! also leads on update cadence (every 4 days vs every 6 weeks). Planet Merge's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

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

Planet Merge ships an update every 6 weeks, Stack by Stack! every 4 days. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Planet Merge | Stack by Stack! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/planet-merge-space-puzzle/id6747612080/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 375 MB | 94 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Godspear Games](https://appshunter.io/developer/1472892124) | [ByeongUk Choi](https://appshunter.io/developer/1872002178) |

## What reviewers say

### Planet Merge

[App page](https://appshunter.io/ios/app/planet-merge-space-puzzle/id6747612080)

Engage in a cosmic merge puzzle inspired by viral drop-and-merge games. Launch celestial bodies into a black hole's gravity field, merging them into larger worlds. Master strategic drops to create the biggest galaxy.

**Highlights:** 360-degree orbit gameplay, Unlock new ships, Strategic merges, Relaxing cosmic visuals, Merge-drop puzzle mechanics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove banner ads | $2.99 | one-time |


### Stack by Stack!

[App page](https://appshunter.io/ios/app/stack-by-stack/id6760553499)

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

**In-app purchases:** none


## Frequently asked questions

### Is Planet Merge free?

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

### Is Stack by Stack! free?

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

### Do Planet Merge or Stack by Stack! have ads?

Both Planet Merge and Stack by Stack! show ads.

### Which is updated more often, Planet Merge or Stack by Stack!?

Planet Merge ships an update every 6 weeks, and Stack by Stack! every 4 days. Most recently, Planet Merge was updated on October 30, 2026 and Stack by Stack! on November 9, 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.*