# PLANETS vs Space Merge X

The clearest difference is in-app purchases: PLANETS at none against Space Merge X's 1. PLANETS also leads on update cadence (fortnightly vs every 3 months) and iOS requirement (6.1 vs 13.0). On price, ads and device support there is nothing between them.

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

PLANETS ships an update fortnightly, Space Merge X every 3 months. The most recent releases landed on September 11, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | PLANETS | Space Merge X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (8 ratings)](https://appshunter.io/ios/app/space-merge-x-planets-fun/id1522465254/reviews)** |
| Number of ratings | — | **8** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 97 MB |
| Requires iOS | **6.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Advaith Jagathesan](https://appshunter.io/developer/1121762093) | [Egor Kunovsky](https://appshunter.io/developer/1810232243) |

## What reviewers say

### PLANETS

[App page](https://appshunter.io/ios/app/planets-learn-mode/id1121762094)

**Features:** macOS Compatibility

**In-app purchases:** none


### Space Merge X

[App page](https://appshunter.io/ios/app/space-merge-x-planets-fun/id1522465254)

Merge identical planets by placing them on a circle to complete levels and discover new celestial bodies. Utilize boosters to strategically delete or merge planets, accelerating your journey through the cosmos. Enjoy a relaxing puzzle experience as you expand your planetary collection.

**Highlights:** Planet merging gameplay, Level completion for discovery, Booster items, Planet deletion option, Intuitive controls

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Boosters | $1.99 | one-time |


## Frequently asked questions

### Is PLANETS free?

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

### Is Space Merge X free?

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

### Do PLANETS or Space Merge X have ads?

Neither PLANETS nor Space Merge X shows ads.

### Which is updated more often, PLANETS or Space Merge X?

PLANETS ships an update fortnightly, and Space Merge X every 3 months. Most recently, PLANETS was updated on September 11, 2026 and Space Merge X on June 3, 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.*