When comparing Gentle Wakeup - Sleep & Alarm Clock with Sunrise vs Google Clock, the Slant community recommends Google Clock for most people. In the question“What are the best alarm clock apps for Android?” Google Clock is ranked 16th while Gentle Wakeup - Sleep & Alarm Clock with Sunrise is ranked 17th. The most important reason people chose Google Clock is:
Since it is from google, it comes preinstalled with android OS.
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Pros
Pro Wake-up light
Pro Night clock
Pro Natural sounds
Pro Sleep timer
Pro Power nap
With a single click you can calm down and making a power nap using slowly decreasing natural sound or meditation and after 30 minutes you will be waken up again by slowly increasing natural sound.
Pro Preinstalled in most android devices
Since it is from google, it comes preinstalled with android OS.
Pro Free
There is no limitation to use it.
Pro Widget works on all launcher
Widget is compatible with most android launchers.
Pro Able to show upcoming alarm on widget
Cons
Con Limited in use
Alarms can not be set to make noise even in silent.
Alarm names limited to 20 characters.