Does Alarm Clock Master app set alarms by date and time or just by repeat alarms. Also does the alarm sound when phone is in silent mode. Anybody please help. Trying endlessly to find a alarm clock app for my iPhone 4.

Does anybody know of any alarm clock apps that work when you have your phone silenced and in lock screen mode and can enter alarms by date and not just have alarms repeat. This would help me out very much. Thank you.