There is no reason why such a device should require an application to fully manage it. But if there is an application, it must be able to do much more. It has a sleep light function (not a very good sunset imitation, btw) but you can't schedule that in the same way as a wake-up light. You can't program the light to just turn on. You can't have a wake-up light without an alarm sound, and if you turn off the sound, the light will turn off too. Snoozing the alarm just doesn't work. The app has a poor user interface and gives a permanent non-disabled notification on Android. The light isn't very bright either.
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