Why didn't my alarm go off?
Next Up won't play from the background unless the alarm has been activated. See 'Alarm Activation' below, or check out the 'Settings' tab for more info, and for options to set reminders.
The alarm will be deactivated if Next Up is force-quit, the device is rebooted, or the OS or app are updated. It's never a bad idea to open the app for a second before bed just in case it was closed for some reason.
Bugs do also happen, and no third party iOS app is immune from occasional failure. When waking up on time is critical, consider setting a backup alarm for a bit later in the native Clock app.
But if you are still having problems getting the alarm to play, please do send me a bug report so I can investigate.
Why was the alarm so quiet/silent?
If the alarm is set to 'Device Volume' in the 'Alarm Settings' screen, the alarm will play at the volume your device is set to when it goes off. Make sure it's loud enough to wake you up.
If the alarm isn't activated, no audio will play if the device is muted.
What happened to the option to fade in the volume?
Unfortunately this feature was causing reliability issues for some users, and has been disabled for now. I hope to include it again in the future.
Can I be woken up to an alarm sound first so I don't miss the beginning of the podcast?
Sort of. There's no built-in way to achieve this yet, but you can set an alarm without a podcast for a few minutes before your regular one to give you time to wake up a bit. Tapping 'Stop' won't deactive the alarm if there is another one set to go off within 15 minutes, but the second one won't play if the first one is currently snoozed (I will try to fix this in the future).