# Good Night System vs ChordMarker

The clearest difference is price: Good Night System at Free against ChordMarker's $4.99. Good Night System also leads on iOS requirement (8.0 vs 17.0). ChordMarker's advantage is update cadence (weekly vs every 6 months). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Good Night System is free to download; ChordMarker costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Good Night System ships an update every 6 months, ChordMarker weekly. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Good Night System | ChordMarker |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| 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 | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | **Free** | Paid |
| Size | 19 MB | 12 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lunatico Astronomia S. L.](https://appshunter.io/developer/571006483) | [梦阳 许](https://appshunter.io/developer/1783294344) |

## 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


### ChordMarker

[App page](https://appshunter.io/ios/app/chordmarker-chord-chart-maker/id6739028965)

Create and edit song chord charts with a simple text format. Easily add chords, preview, transpose, and export your song sheets as PDF, image, or text. Ideal for songwriters, musicians, and teachers.

**Highlights:** ChordMark notation for chart creation, Dedicated chord keyboard for fast input, Scan text from images, Instant key transposition, Export as PDF, image, or plain text, iCloud sync across devices

**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 ChordMarker free?

ChordMarker costs $4.99, with no in-app purchases.

### Do Good Night System or ChordMarker have ads?

Neither Good Night System nor ChordMarker shows ads.

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

Good Night System ships an update every 6 months, and ChordMarker weekly. Most recently, Good Night System was updated on October 23, 2026 and ChordMarker on October 15, 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.*