# Cosmos vs Solar System Clock

The clearest difference is device support: Solar System Clock at 3 against Cosmos's 1. On price, update cadence, ads and in-app purchases 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, Solar System Clock every 2 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Cosmos | Solar System Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/solar-system-clock/id6746730661/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 days |
| Monetization | Free | Free |
| Size | 67 MB | 5 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Salih Yusuf Goktas](https://appshunter.io/developer/1693054465) | [Mateusz Andrzejczuk](https://appshunter.io/developer/1158375886) |

## 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


### Solar System Clock

[App page](https://appshunter.io/ios/app/solar-system-clock/id6746730661)

Visualize the current or historical positions of planets in our solar system. Explore future or past planetary alignments and identify optimal times for observing planets in the night sky.

**Highlights:** Real-time planet positions, Custom date selection, Past and future alignments, Optimal viewing time identification, Solar System visualization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cosmos free?

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

### Is Solar System Clock free?

Solar System Clock is free to download, with no in-app purchases.

### Do Cosmos or Solar System Clock have ads?

Neither Cosmos nor Solar System Clock shows ads.

### Which is updated more often, Cosmos or Solar System Clock?

Cosmos ships an update daily, and Solar System Clock every 2 days. Most recently, Cosmos was updated on October 24, 2026 and Solar System Clock on October 28, 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.*