# SynScan vs iOptron Commander (iOS)

The clearest difference is rating: SynScan at 3.3 against iOptron Commander (iOS)'s 1.9. SynScan also leads on update cadence (every 2 months vs every 6 months) and review sentiment (22% vs 6%). On price, ratings volume, 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.

SynScan holds the better App Store score, 3.3 against 1.9. Both are backed by a comparable volume of ratings — 8 and 14 respectively. Written reviews point the same way: 22% of SynScan's written reviews are positive against 6% of iOptron Commander (iOS)'s.

SynScan ships an update every 2 months, iOptron Commander (iOS) every 6 months. The most recent releases landed on September 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SynScan | iOptron Commander (iOS) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (8 ratings)](https://appshunter.io/ios/app/synscan/id1243086631/reviews)** | [1.9 (14 ratings)](https://appshunter.io/ios/app/ioptron-commander-ios/id1626958667/reviews) |
| Number of ratings | 8 | **14** |
| Positive reviews | **22.2% of reviews** | 6.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 46 MB | 24 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Astropower Technology Co. Ltd.](https://appshunter.io/developer/1787940478) | [成城 徐](https://appshunter.io/developer/564078964) |

## What reviewers say

### SynScan

[App page](https://appshunter.io/ios/app/synscan/id1243086631)

Control motorized telescope mounts for celestial object tracking and exploration. Features include GOTO functionality, object catalogs, and gamepad navigation. Ideal for novice users with alt-azimuth mounts.

**Highlights:** Control telescope mount slew, align, GOTO, and track, Point and Track celestial objects, Support gamepad navigation, Browse and save celestial object catalogs, Third-party app integration (ASCOM, SkySafari, Stellarium), Emulator mount for testing

**Features:** macOS Compatibility

**In-app purchases:** none


### iOptron Commander (iOS)

[App page](https://appshunter.io/ios/app/ioptron-commander-ios/id1626958667)

Control your iOptron telescope mount remotely using your iOS device. This utility allows for basic functions like slewing to celestial objects, syncing time and location, and managing compatible mount series.

**Highlights:** Remote telescope mount control, Slew to stars and deepsky objects, Sync time and site from iOS, Supports HEM, HAE, HAZ, CEM, GEM series mounts, Basic control functions

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

**In-app purchases:** none


## Frequently asked questions

### Is SynScan free?

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

### Is iOptron Commander (iOS) free?

iOptron Commander (iOS) is free to download, with no in-app purchases.

### Which has better reviews, SynScan or iOptron Commander (iOS)?

SynScan is rated higher. SynScan averages 3.3 out of 5 from 8 ratings, while iOptron Commander (iOS) averages 1.9 from 14 ratings.

### Do SynScan or iOptron Commander (iOS) have ads?

Neither SynScan nor iOptron Commander (iOS) shows ads.

### Which is updated more often, SynScan or iOptron Commander (iOS)?

SynScan ships an update every 2 months, and iOptron Commander (iOS) every 6 months. Most recently, SynScan was updated on September 16, 2026 and iOptron Commander (iOS) on October 2, 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.*