Update : Since installed on my S22 ultra, I have not been getting reliable notifications (even after seven hours). I have turned off all optimization for battery /data for the app, other online suggestions and yet no progress. I will change this review back to 5 stars once fixed. I have been using this app for years and occasionally try new ones but always come back. The developers are great at bug fixes (though I have not seen bugs) and adding new features. Amazing free app!