I’ve had AlarmClock for years, but the past few months the alarm randomly doesn’t go off. Yes, I know how to use it, yes my volume is ON, yes my volume is UP, yes the alarm is SAVED, yes AlarmClock is OPEN all night as I use the clock and yes, I keep it UPDATED. So unfortunately, my grandson has been late to school too many times- thanks to AlarmClock. So I have no other choice but to replace AlarmClock with a RELIABLE one. Sad, this used to be a great, reliable app, but isn’t anymore. Please, use AlarmClock with caution. Forewarned IS forearmed! Do not rely on this alarm for work or school. If it’s alright if you over-sleep, go for it. But to me, what is the point of an alarm clock if it’s NOT RELIABLE? You usually set an alarm because you must get up at a certain time for a reason. It’s like playing Russian Roulette with AlarmClock, sometimes the set alarm will go off, sometimes for days or even weeks without any issues, then BOOM! It just doesn’t go off at all. It’s hit or miss. It’s your choice, just know you may be late or miss that appointment with AlarmClock. I really hope they fix the issue, as this was the only alarm I used for years. Cheers!