APT Darkness Clock
APT Darkness Clock is made and published by Distinct Solutions Ltd. AppBrain is an independent app data site and isn't affiliated with Distinct Solutions Ltd. The app name, icon, screenshots and description belong to Distinct Solutions Ltd. and are shown as published on Google Play.
AppBrain's verdict
EstablishedLoved by users- Rating on Google Play
- 5.00
- 125 ratings
- Installs
- 14 thousand
- Last updated
- October 28, 2025
- Ads
- No ads
- Size
- 5.17 MB
APT Darkness Clock has 14 thousand installs. Users love it: 5.0 stars from 125 ratings.
User feedback
Ratings and reviews on Google PlayComments on APT Darkness Clock for Android
Google Play Rating history and histogram
Store listing
By Distinct Solutions Ltd., from Google Play“APT DC calculates the suitable time for deep sky astrophotography.”
Description by Distinct Solutions Ltd. Written by the developer, not by AppBrain. Click to read.
APT is like Swiss army knife for your astro imaging sessions. No matter what are imaging with - Canon EOS, Nikon, CCD or CMOS astro camera, APT has the right tool for planning, collimating, aligning, focusing, framing, plate-solving, controlling, imaging, synchronizing, scheduling, analyzing, monitoring and more. You can find additional information about APT at www.astrophotography.app.
To image or observe a faint deep sky objects is needed to use the darkest time of the night. This is the time between the evening astro twilight end, the morning astro twilight beginning and when the Moon is below the horizon. In APT that time is named DSD Time - Deep Sky Darkness Time. If the imaging is through narrow band filters, the Moon is less significant factor and important is the time between the astro twilights. This time is named NB Time - Narrow Band Time.
The purpose of APT DC is to calculate what is the DSD / NB Time duration and when these times starts/ends for selected night and location. It is possible to use the current location or one of three other stored observing sites.
For suggestions and support related to APT DC, use the dedicated section of the APT Forum at - http://aptforum.com/phpbb/viewforum.php?f=26
Recent changes:
Google Play compatibility update
Safety and technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 25
- App size
- 5.17 MB
- Needs Android
- 4.0.3+
- Content rating
- Everyone
Technologies used by APT Darkness Clock
Releases
Updates seen on Google Play- Version
- 2.8
- Launched
- January 2018
Alternatives
Similar apps and more from Distinct Solutions Ltd.Alternatives to APT Darkness Clock
Installs
Tracked by AppBrain- Last 30 days
- 28
- Play install range
- 10+ thousand
- Launched
- January 2018
Installs over time
APT Darkness Clock has been installed 14 thousand times. Over the past 30 days, it has been installed 28 times.
Rankings
Google Play top chartsGoogle Play Rankings for APT Darkness Clock
About the app and developer
About APT Darkness Clock
APT Darkness Clock is a tools app developed by Distinct Solutions Ltd.
How many times has APT Darkness Clock been installed?
APT Darkness Clock has been installed 14 thousand times. In the last 30 days, the app was installed 28 times.
What is the rating of APT Darkness Clock?
APT Darkness Clock is rated 5.00 out of 5 stars, based on 130 ratings.
Is APT Darkness Clock free?
APT Darkness Clock is free. The app size is 5.18 MB. The latest version available is 2.8. The last update was on October 28, 2025.
What are the requirements for APT Darkness Clock?
APT Darkness Clock requires Android 4.0.3+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since January 2018.
App Performance Report
Get a detailed PDF report for APT Darkness Clock with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for Distinct Solutions Ltd.
Frequently asked questions about APT Darkness Clock
Is APT Darkness Clock free?
Yes. APT Darkness Clock is free on Google Play.
Is APT Darkness Clock still available?
Yes. APT Darkness Clock is on Google Play, and the last update we saw was on October 28, 2025.
Does APT Darkness Clock contain ads?
No. Google Play does not list APT Darkness Clock as containing ads.
What Android version does APT Darkness Clock require?
APT Darkness Clock runs on Android 4.0.3 and higher.
How large is APT Darkness Clock?
APT Darkness Clock is 5.18 MB.
Is APT Darkness Clock suitable for children?
Google Play rates the content of APT Darkness Clock as suitable for everyone.
How many times has APT Darkness Clock been installed?
Google Play lists 10,000+ installs for APT Darkness Clock.
How do people rate APT Darkness Clock?
APT Darkness Clock scores 5.00 out of 5 stars, from 125 ratings on Google Play.
Who made APT Darkness Clock?
APT Darkness Clock was developed by Distinct Solutions Ltd. It is listed in the tools category on Google Play.
What are the best alternatives to APT Darkness Clock?
People looking at APT Darkness Clock also look at these tools apps: Astro Clock Widget, Astro Capture, DeepSkyCamera Pro, Light pollution map, Ouranos: Stargazing Forecast.