Since version 3.8.3 of the app, you can choose between the Zmanim according to Rav Ovadia Yosef ז”ל and Rav Meir Posen שליטא.
Go the the Settings screen, section «Halacha», and select the shitta of your choice for the different zmanim.
How can I see the Zmanim in Rav Ovadia Yosef opinion?
What is the meaning of the letters and quotation marks in the parentheses of the zmanim: shema (M ”A) or (GR” A) would greatly appreciate your response. thanks
Hi,
Thank you for using my app.
It means:
Magen Avraham, https://en.wikipedia.org/wiki/Avraham_Gombiner
and haGaon Rabbi Eliahu https://en.wikipedia.org/wiki/Vilna_Gaon