# SynScan Pro vs Cygnus Astro

The clearest difference is review sentiment: Cygnus Astro at 67% against SynScan Pro's 22%. Cygnus Astro also leads on rating (4.5 vs 2.6) and monetization model (free vs paid). SynScan Pro's advantage is ratings volume (51 vs 2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cygnus Astro holds the better App Store score, 4.5 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. Written reviews point the same way: 22% of SynScan Pro's written reviews are positive against 67% of Cygnus Astro's.

SynScan Pro ships an update every 2 months, Cygnus Astro every 5 days. The most recent releases landed on July 4, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | SynScan Pro | Cygnus Astro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (51 ratings)](https://appshunter.io/ios/app/synscan-pro/id1302270121/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/cygnus-astro/id6745795760/reviews)** |
| Number of ratings | **51** | 2 |
| Positive reviews | 21.5% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Paid | **Free** |
| Size | 46 MB | 32 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Astropower Technology Co. Ltd.](https://appshunter.io/developer/1787940478) | [Christopher Ventura](https://appshunter.io/developer/1742045592) |

## 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


### Cygnus Astro

[App page](https://appshunter.io/ios/app/cygnus-astro/id6745795760)

Control your astrophotography equipment remotely from your mobile device. This app provides a touch-friendly interface to connect, monitor, and manage your N.I.N.A. software and connected gear, simplifying your setup in the field.

**Highlights:** Remote equipment control, N.I.N.A. software integration, Mobile touch interface, Real-time exposure preview, Open-source and free

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SynScan Pro free?

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

### Is Cygnus Astro free?

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

### Which has better reviews, SynScan Pro or Cygnus Astro?

Cygnus Astro is rated higher. SynScan Pro averages 2.6 out of 5 from 51 ratings, while Cygnus Astro averages 4.5 from 2 ratings.

### Do SynScan Pro or Cygnus Astro have ads?

Neither SynScan Pro nor Cygnus Astro shows ads.

### Which is updated more often, SynScan Pro or Cygnus Astro?

SynScan Pro ships an update every 2 months, and Cygnus Astro every 5 days. Most recently, SynScan Pro was updated on July 4, 2026 and Cygnus Astro on June 4, 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.*