Alarm clock plus has been mine for 5 years now. Simple with a lot of options should you need them. I just wich it had a newer UI. I even went in and hacked the fonts last year to freshen it up
HTC ONE M8
Note 10.1 2014 P605
S4 I337M S3 I747M
Samsung Galaxy S II X SGH-T989
HTC Desire HD
Motorola Milestone