# RealTime Space vs COSMOS

The clearest difference is in-app purchases: COSMOS at none against RealTime Space's 1. COSMOS also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | RealTime Space | COSMOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cosmos-3d-solar-system/id6792780408/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Paid |
| Size | 65 MB | 4 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nice Dreamz llc](https://appshunter.io/developer/1834116530) | [yuudai tasaki](https://appshunter.io/developer/1861229093) |

## What reviewers say

### RealTime Space

[App page](https://appshunter.io/ios/app/realtime-space/id6788646103)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Forever | $0.99 | one-time |


### COSMOS

[App page](https://appshunter.io/ios/app/cosmos-3d-solar-system/id6792780408)

Explore a real-time 3D model of the solar system, accurately depicting planet positions based on orbital mechanics. Zoom in on celestial bodies, control time to view past or future sky events, and learn details about each planet. This app offers an ad-free, offline experience with a one-time purchase.

**Highlights:** Real-time planet and moon positions, Scrub through time for past/future views, Photo-realistic textures, Adjustable time scale, Free exploration with pinch and swipe, Detailed information on celestial bodies

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

**In-app purchases:** none


## Frequently asked questions

### Is RealTime Space free?

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

### Is COSMOS free?

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

### Do RealTime Space or COSMOS have ads?

Neither RealTime Space nor COSMOS shows ads.

### Which is updated more often, RealTime Space or COSMOS?

RealTime Space ships an update every 2 weeks, and COSMOS every 2 weeks. Most recently, RealTime Space was updated on October 24, 2026 and COSMOS on October 25, 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.*