# Skylob vs Mars

The clearest difference is ads: Skylob at none against Mars's shown. Skylob also leads on update cadence (every 3 weeks vs every 32 months). On price, rating, ratings volume 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.

On the App Store both sit at effectively the same score — 5.0 for Skylob against 5.0 for Mars. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Skylob ships an update every 3 weeks, Mars every 32 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Skylob | Mars |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/skylob/id1538744084/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/mars-curiosity/id1549319225/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 32 months |
| Monetization | Free | — |
| Size | 11 MB | 108 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Kyle Cheng](https://appshunter.io/developer/1518774140) | [Alparslan Topbas](https://appshunter.io/developer/1130875171) |

## What reviewers say

### Skylob

[App page](https://appshunter.io/ios/app/skylob/id1538744084)

Explore the vastness of the observable universe, from its immense size to the accelerating expansion driven by dark energy. Discover how our cosmological horizon is shrinking, making parts of the cosmos permanently unknowable. This app invites contemplation on our place within this cosmic immensity.

**Highlights:** Observable universe scale, Dark energy and expansion, Cosmological horizon explained, Our place in the cosmos, Scientific concepts simplified

**Features:** macOS Compatibility

**In-app purchases:** none


### Mars

[App page](https://appshunter.io/ios/app/mars-curiosity/id1549319225)

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

**In-app purchases:** none


## Frequently asked questions

### Is Skylob free?

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

### Is Mars free?

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

### Which has better reviews, Skylob or Mars?

Skylob and Mars are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Skylob or Mars have ads?

Mars shows ads; Skylob does not.

### Which is updated more often, Skylob or Mars?

Skylob ships an update every 3 weeks, and Mars every 32 months. Most recently, Skylob was updated on October 24, 2026 and Mars on October 24, 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.*