Mahbanou is a free calendar app with Zoroastrian observances, in English and Persian. It shows the Shahenshahi, Kadmi and Fasli calendars alongside the Iranian Solar Hijri and Gregorian calendars, with Parsi and Iranian holy days such as Navroz, Khordad Sal, Pateti, Muktad and the Gahambars, plus daily gah times for your city. You can also print a month or a whole year, or save it as a PDF, right from the app. Printable calendars are also free to download at https://www.google.com/url?q=https://zubin.dev/apps/mahbanou/%23calendars&source=gmail&ust=1792250373761000&sa=E. It works offline, with no ads and no payments.

iPhone and iPad (available now): https://www.google.com/url?q=https://apps.apple.com/us/app/mahbanou-persian-calendar/id6815880718&source=gmail&ust=1792250373762000&sa=E

Android testers wanted: Google requires a 14-day closed test before a new app can launch on Google Play. To join, email your Gmail address to zubin.khavarian@gmail.com, then opt in at https://www.google.com/url?q=https://play.google.com/apps/testing/dev.zubin.mahbanou&source=gmail&ust=1792250373762000&sa=E