"নামাজ ও রোযার স্থায়ী সময়সূচী" (Namaz and Roza Time Bangladesh) is an app developed by LiiBD Inc. It provides a comprehensive timetable for namaz (prayer) and roza (fasting) for the entire year. The app is based on the calendar created by the Bangladesh Islamic Foundation, which calculates the prayer and fasting times based on the position of the sun and moon, as well as the observation of the Arabic month. The app takes into account the specific geographical location of Bangladesh and adjusts the prayer and fasting times accordingly.

With "নামাজ ও রোযার স্থায়ী সময়সূচী," Muslims in Bangladesh can easily access the accurate prayer and fasting times for each day. The app is especially useful during Ramadan, as it provides the sehri (pre-dawn meal) and iftar (meal to break the fast) timings. It also serves as a reminder for the prayer times when the azan (call to prayer) is not audible. The app can be downloaded for free from the Google Play Store, making it accessible to all Muslims in Bangladesh.