# CMB Maps vs Skylob

The clearest difference is rating: Skylob at 5.0 against CMB Maps's 3.9. Skylob also leads on update cadence (every 3 weeks vs every 75 months). CMB Maps's advantage is ratings volume (21 vs 1). 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.

Skylob holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: CMB Maps has 21 ratings behind it against 1, so its average is the more settled of the two.

CMB Maps ships an update every 75 months, Skylob every 3 weeks. Both last shipped on November 13, 2026.

## The numbers

| Metric | CMB Maps | Skylob |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (21 ratings)](https://appshunter.io/ios/app/cmb-maps/id894952449/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/skylob/id1538744084/reviews)** |
| Number of ratings | **21** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 75 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 136 MB | 11 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qingqing Mao](https://appshunter.io/developer/894952452) | [Kyle Cheng](https://appshunter.io/developer/1518774140) |

## What reviewers say

### CMB Maps

[App page](https://appshunter.io/ios/app/cmb-maps/id894952449)

Explore the cosmic microwave background with detailed maps from various missions. Interact with the sky, zoom in on specific areas, and learn about the universe's oldest light through informative notes and charts. Works offline and is designed for privacy.

**Highlights:** Interactive sky maps, Multiple mission data (COBE, WMAP, Planck), Detailed zoom and pan functionality, Informative notes and timelines, Customizable color scales, Offline functionality, Accessibility features

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is CMB Maps free?

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

### Is Skylob free?

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

### Which has better reviews, CMB Maps or Skylob?

Skylob is rated higher. CMB Maps averages 3.9 out of 5 from 21 ratings, while Skylob averages 5.0 from 1 ratings.

### Do CMB Maps or Skylob have ads?

Neither CMB Maps nor Skylob shows ads.

### Which is updated more often, CMB Maps or Skylob?

CMB Maps ships an update every 75 months, and Skylob every 3 weeks. Most recently, CMB Maps was updated on November 13, 2026 and Skylob on November 13, 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.*