Good Night System vs Keep Screen On
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Good Night System
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.
- Observatory monitoring
- Sleep-time alerts
- iPhone wake-up notifications
- Companion iOS app
- Free PC application available
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The iOS companion for our Good Night System. With this app, your observatory will be monitored while you sleep... at last, and should anything go wrong, your iPhone will wake you up. Before purchasing, please download and try the free app to check everything runs fine. Please visit our web site for details and to download the FREE Windows PC application
Keep Screen On
This utility prevents your device from entering sleep mode while running specific tasks, such as waiting for code builds to finish. It offers customizable timeout settings and an alarm notification upon completion.
- Prevents device sleep mode
- Useful for code builds
- Customizable timeout
- Alarm notification
- Runs in background
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Very important : This application doesn't modify phone's setting to increase screen auto-lock time. It is just a small trick to keep screen on when running. Tip: Pin to dock bar for best experience. This app has the main function is to prevent your device from going to sleep mode, which is convenient for you while waiting for the xcode build is finished. Step 1: Run the app (on your device). Step 2: Use Xcode to build and deploy your application onto the device. Step 3: App will prevent your device from falling into sleep mode and hide in the background when your application is deployed. You can set the maximum timeout to avoid the case when your application fails to deploy , make the app stuck on waiting. You can also set an alarm when your application has been deployed
Screenshots
Verdict
The clearest difference is price: Good Night System at Free against Keep Screen On's $0.99. Good Night System also leads on rating (3.7 vs 2.0) and review sentiment (50% vs 40%). Keep Screen On's advantage is ratings volume (12 vs 3). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Good Night System is free to download; Keep Screen On costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Good Night System holds the better App Store score, 3.7 against 2.0. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews point the same way: 50% of Good Night System's written reviews are positive against 40% of Keep Screen On's.
Good Night System ships an update every 6 months, Keep Screen On every 5 months. The most recent releases landed on June 6, 2026 and September 9, 2026 respectively.
| Parameter | Good Night System | Keep Screen On |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.7 (3 ratings) — better | 2.0 (12 ratings) |
| Positive reviews | 50.0% of reviews — better | 40.0% of reviews |
| Number of ratings | 3 | 12 — better |
| Update frequency | Every 6 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 19 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Lunatico Astronomia S. L. | Duy Nguyen |
Customer experience
Good Night System
Keep Screen On
In-app purchases
Good Night System
No in-app purchases
Keep Screen On
No in-app purchases
Questions
Is Good Night System free?
Is Keep Screen On free?
Which has better reviews, Good Night System or Keep Screen On?
Do Good Night System or Keep Screen On have ads?
Which is updated more often, Good Night System or Keep Screen On?
Other comparisons
