# Good Night System vs SQM Mobile

The clearest difference is update cadence: SQM Mobile at every 4 weeks against Good Night System's every 6 months. Good Night System's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 17.6). 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.

Good Night System ships an update every 6 months, SQM Mobile every 4 weeks. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Good Night System | SQM Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/good-night-system/id646945920/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 19 MB | 42 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lunatico Astronomia S. L.](https://appshunter.io/developer/571006483) | [GerSpatial](https://appshunter.io/developer/504662245) |

## What reviewers say

### Good Night System

[App page](https://appshunter.io/ios/app/good-night-system/id646945920)

This iOS companion app monitors your observatory while you sleep. It will alert you via your iPhone if any issues arise, ensuring peace of mind for astronomers. A free PC application is also available for download.

**Highlights:** Observatory monitoring, Sleep-time alerts, iPhone wake-up notifications, Companion iOS app, Free PC application available

**Features:** macOS Compatibility

**In-app purchases:** none


### SQM Mobile

[App page](https://appshunter.io/ios/app/sqm-mobile/id6753923113)

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

**In-app purchases:** none


## Frequently asked questions

### Is Good Night System free?

Good Night System is free to download, with no in-app purchases.

### Is SQM Mobile free?

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

### Do Good Night System or SQM Mobile have ads?

Neither Good Night System nor SQM Mobile shows ads.

### Which is updated more often, Good Night System or SQM Mobile?

Good Night System ships an update every 6 months, and SQM Mobile every 4 weeks. Most recently, Good Night System was updated on October 23, 2026 and SQM Mobile on October 12, 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.*