# LLM Master vs COSMOS

The clearest difference is price: COSMOS at Free against LLM Master's $22.99. COSMOS also leads on in-app purchases (none vs 4). LLM Master's advantage is device support (4 vs 2). On update cadence, ads and iOS requirement there is nothing between them.

COSMOS is free to download; LLM Master costs $22.99 up front. LLM Master sells 4 one-off in-app purchases. COSMOS asks for nothing beyond the download.

LLM Master ships an update fortnightly, COSMOS every 2 weeks. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | LLM Master | COSMOS |
| --- | --- | --- |
| Price | $22.99 | **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 | Fortnightly | **Every 2 weeks** |
| Monetization | — | Paid |
| Size | 6 MB | 4 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Resonance Space](https://appshunter.io/developer/1582458978) | [yuudai tasaki](https://appshunter.io/developer/1861229093) |

## What reviewers say

### LLM Master

[App page](https://appshunter.io/ios/app/llm-master/id6769785318)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Code Deep Dive | Free | one-time |
| Tutor Mini Pack | $2.99 | one-time |
| Tutor Standard Pack | $5.99 | one-time |
| Tutor Power Pack | $17.99 | 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 LLM Master free?

LLM Master costs $22.99, and also offers in-app purchases.

### Is COSMOS free?

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

### Do LLM Master or COSMOS have ads?

Neither LLM Master nor COSMOS shows ads.

### Which is updated more often, LLM Master or COSMOS?

LLM Master ships an update fortnightly, and COSMOS every 2 weeks. Most recently, LLM Master was updated on October 25, 2026 and COSMOS on October 31, 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.*