# Cosmos vs Project Planet Space

The clearest difference is update cadence: Cosmos at daily against Project Planet Space's every 25 months. Project Planet Space's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Cosmos ships an update daily, Project Planet Space every 25 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | Cosmos | Project Planet Space |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/project-planet-space/id6499347273/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 25 months |
| Monetization | Free | Free |
| Size | 67 MB | 2 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Salih Yusuf Goktas](https://appshunter.io/developer/1693054465) | [Miroslav Hanzelka](https://appshunter.io/developer/1653768748) |

## What reviewers say

### Cosmos

[App page](https://appshunter.io/ios/app/cosmos-our-solar-system/id6480411273)

Explore our solar system with realistic 3D models of planets. Discover detailed information about atmospheric compositions, surface features, and fascinating facts. An interactive journey for space enthusiasts and curious learners.

**Highlights:** Realistic 3D planet models, Detailed atmospheric and surface information, Captivating animations, Engaging exploration interface, Fascinating space facts

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

**In-app purchases:** none


### Project Planet Space

[App page](https://appshunter.io/ios/app/project-planet-space/id6499347273)

Explore our solar system with an interactive map. Discover planetary gravity, temperatures, and atmospheric data. Calculate your weight on other worlds and learn fascinating space facts.

**Highlights:** Interactive solar system map, Personalized weight and age calculations, Detailed planetary data widgets, Multi-language support, Metric/Imperial unit switching, Cosmic museum aesthetic, Real astronomical data integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cosmos free?

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

### Is Project Planet Space free?

Project Planet Space is free to download, with no in-app purchases.

### Do Cosmos or Project Planet Space have ads?

Neither Cosmos nor Project Planet Space shows ads.

### Which is updated more often, Cosmos or Project Planet Space?

Cosmos ships an update daily, and Project Planet Space every 25 months. Most recently, Cosmos was updated on November 4, 2026 and Project Planet Space on November 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.*