Smart Azan Clock calculates prayer times using PrayTimes.org library. It uses Google APIs to determine your coordinates & altitude and it auto-adjusts itself on daylight savings time changes.
After you set it up on a device of your choice you can manage it remotely using your smartphone or computer while you are on the same network.
Using your smartphone or computer play any YouTube video on Smart Azan Clock remotely.
These are alarms based on prayer times. For example 15 minutes after Sunrise for Salatul Ishraq or 60 minutes before Fajr for Sahoor. Very useful especially during Ramadan.
You can set alarms for fixed times everyday. Waking up for work, bells for your homeschool!
Unless you want to be up-to-date with the latest you don't need to be connected to the Internet for Smart Azan Clock to work. You can disable WiFi or switch to airplane mode after initial setup.