Free and open-source Persian Calendar with Compass/Qibla and Athan, and Dari, Kurdish, Azeri, Pashto, Arabic, Gilaki, English, Turkish, Japanese, Spanish, Chinese and French support. Supports Gregorian and Islamic calendars support also.

Works with TalkBack accessibility feature of Android also.

https://github.com/persian-calendar/DroidPersianCalendar

Please note that permanent date notification bar can be easily disabled from preference. Also features an optional Athan player.