APT Darkness Clock (APT DC) is a free app without ads, that calculates the suitable time for deep sky astrophotography or observing in selected night and location. It is a small sub-set of a full featured desktop application named APT - Astro Photography Tool. APT is like Swiss army knife for your astro imaging sessions.
It's secure to download this application. Distinct Solutions Ltd. designed the app that falls into the Tools category. The most recent release was on Oct 11, 2020 and APT Darkness Clock was downloaded and set up by over 5K users.
According to the latest information, this application is rated 4.9 on Google Play. Download the installer of APT Darkness Clock 2.0 for free and have a look at users' reviews on Droid Informer. The app can be launched on Android devices 4.0.3 and above.