Please add an option to change the calculation method. Many mosques use slightly different methods (so timings are 1 to 2 minutes different).
My local mosque for example uses Muslim World League and I am not able to change it (from Moonsighting Commitee). I like the app but it is a bit annoying when timings are not perfectly synced to my local mosques.
Its a simple implementation to the app I imagine but it would make more users happy.

JazakAllah