Religious Day and Night is an Android application by İslami Uygulamalar that helps users keep track of religious days and nights. The app does not require an internet connection and has no advertisements. It offers a comprehensive list of religious days and nights for the next 200 years, with a countdown to each event. Users can customize the service and set reminders, including options for ringtone, vibrating, and LED notifications.

The app also offers notification options for specific days, including on the day, 1 day ago, 2 days ago, 1 week ago, and 15 days ago. Users can defer notifications, and the app offers email notification, SMS, and social sharing options. The widget feature allows users to see upcoming events on their home screen. The app is available in Turkish, English, and German, and is 100% free. Some messages for new UIs are left in English, but users can contact the developer to help translate them into their language.

Religious Day and Night is a simple yet comprehensive solution for those who want to keep track of religious occasions. The customizable notification options and widget feature make it easy to stay on top of upcoming events.