After a short test I deleted the app again because:
-The what she does, she does neatly and graphically appealing (a ringer for today and the next day), but
-something which is vital for me for a good alarm clock, lack (or at least I have not found):
I know, for example, today, that I have to get up early on four Saturdays before Christmas.
These dates I took over my current alarm (Caynax Alarm Clock Pro) immediately as alarms.
With Alarm Clock Xtreme this seems to be impossible - uninstalled.