# iOptron Commander (iOS) vs OnStep Controller

iOptron Commander (iOS) and OnStep Controller are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | iOptron Commander (iOS) | OnStep Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (15 ratings)](https://appshunter.io/ios/app/ioptron-commander-ios/id1626958667/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 6.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Monetization | Free | — |
| Size | 24 MB | 7 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [成城 徐](https://appshunter.io/developer/564078964) | [Gray Digital Arts LLC](https://appshunter.io/developer/1895978400) |

## What reviewers say

### 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


### OnStep Controller

[App page](https://appshunter.io/ios/app/onstep-controller-gda/id6765521295)

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

**In-app purchases:** none


## Frequently asked questions

### Is iOptron Commander (iOS) free?

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

### Is OnStep Controller free?

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

### Do iOptron Commander (iOS) or OnStep Controller have ads?

Neither iOptron Commander (iOS) nor OnStep Controller shows ads.

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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.*