# SkyAtlas vs norlys

The clearest difference is rating: norlys at 5.0 against SkyAtlas's 2.4. SkyAtlas's advantage is update cadence (monthly vs every 3 months) and ratings volume (17 vs 2). 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.

norlys holds the better App Store score, 5.0 against 2.4. That said, the two scores are not equally well evidenced: SkyAtlas has 17 ratings behind it against 2, so its average is the more settled of the two.

SkyAtlas ships an update monthly, norlys every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | SkyAtlas | norlys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (17 ratings)](https://appshunter.io/ios/app/skyatlas/id1616449238/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/norlys/id6751714839/reviews)** |
| Number of ratings | **17** | 2 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | Free |
| Size | 911 MB | 4 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SuZhou ZWO Co., Ltd](https://appshunter.io/developer/1367782033) | [Hugo Lageneste](https://appshunter.io/developer/1836395000) |

## What reviewers say

### SkyAtlas

[App page](https://appshunter.io/ios/app/skyatlas/id1616449238)

Explore the night sky with a digital atlas and control your telescope mount. Plan astrophotography compositions with simulated camera fields of view and track celestial objects in real-time. Features one-click GoTo and mode switching for an enhanced stargazing experience.

**Highlights:** Digital sky atlas exploration, Telescope mount control (ZWO ASI), Simulated camera field of view, Real-time telescope pointing display, One-click GoTo functionality, Object tracking, EQ and AltAz mode switching

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

**In-app purchases:** none


### norlys

[App page](https://appshunter.io/ios/app/norlys/id6751714839)

This app provides a real-time world map and data to assist in tracking and chasing the northern lights. It simplifies the process of finding optimal viewing conditions for aurora displays.

**Highlights:** Real-time world map, Aurora data products, Northern lights tracking, Optimized viewing conditions, Chasing assistance

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

**In-app purchases:** none


## Frequently asked questions

### Is SkyAtlas free?

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

### Is norlys free?

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

### Which has better reviews, SkyAtlas or norlys?

norlys is rated higher. SkyAtlas averages 2.4 out of 5 from 17 ratings, while norlys averages 5.0 from 2 ratings.

### Do SkyAtlas or norlys have ads?

Neither SkyAtlas nor norlys shows ads.

### Which is updated more often, SkyAtlas or norlys?

SkyAtlas ships an update monthly, and norlys every 3 months. Most recently, SkyAtlas was updated on October 24, 2026 and norlys 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.*