I like Android's always on display feature, but I find it's really bright at night. However, there's a way to turn it off overnight in Google's Clock app.

You don’t want to hate your alarm clock whenever it wakes you up each morning, but a great alarm app shouldn’t be very easy to turn off (tempting you to you go back to bed).

To silence the alarm, you’ll need to scan a specified barcode. If you’ve got a morning ritual, Morning Routine can also open a URL of your choice once you’ve silenced your alarm.

iOS: We're fans of the Wake N Shake alarm clock because it really forces you to get up and out of bed by making your vigorously shake your phone before the alarm turns off.