# SynScan Pro vs norlys

The clearest difference is rating: norlys at 5.0 against SynScan Pro's 2.6. norlys also leads on monetization model (free vs paid). SynScan Pro's advantage is ratings volume (51 vs 2) and update cadence (every 2 months vs every 5 months). On price, ads 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.

norlys holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: SynScan Pro has 51 ratings behind it against 2, so its average is the more settled of the two.

SynScan Pro ships an update every 2 months, norlys every 5 months. The most recent releases landed on July 4, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SynScan Pro | norlys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (51 ratings)](https://appshunter.io/ios/app/synscan-pro/id1302270121/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/norlys/id6751714839/reviews)** |
| Number of ratings | **51** | 2 |
| Positive reviews | 21.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Paid | **Free** |
| Size | 46 MB | 3 MB |
| Requires iOS | **14.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Astropower Technology Co. Ltd.](https://appshunter.io/developer/1787940478) | [Hugo Lageneste](https://appshunter.io/developer/1836395000) |

## What reviewers say

### SynScan Pro

[App page](https://appshunter.io/ios/app/synscan-pro/id1302270121)

Control motorized telescope mounts for celestial observation and astrophotography. Features include precise slewing, alignment, GOTO, and tracking of stars, planets, and deep-sky objects. Supports advanced functions like polar alignment and camera triggering.

**Highlights:** Control telescope mount (slew, align, GOTO, track), Point and Track celestial objects, Gamepad navigation support, Catalog of celestial objects, Third-party app integration (ASCOM, SkySafari), Polar alignment (with or without polar scope), Camera shutter release control

**Features:** macOS Compatibility

**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 SynScan Pro free?

SynScan Pro 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, SynScan Pro or norlys?

norlys is rated higher. SynScan Pro averages 2.6 out of 5 from 51 ratings, while norlys averages 5.0 from 2 ratings.

### Do SynScan Pro or norlys have ads?

Neither SynScan Pro nor norlys shows ads.

### Which is updated more often, SynScan Pro or norlys?

SynScan Pro ships an update every 2 months, and norlys every 5 months. Most recently, SynScan Pro was updated on July 4, 2026 and norlys on September 8, 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.*