Apps like Entrain

Here are some great alternatives to Entrain by The University of Michigan :
Circadian: Your Natural Rhythm
Circadian: Your Natural Rhythm
★4.3
Timeshifter Jet Lag
Timeshifter Jet Lag
★4.5
Arcashift: Sleep & Balance
Arcashift: Sleep & Balance
★3.9
Easy Timezones World Converter
Easy Timezones World Converter
★3.5
Biological Clock: track sleep
Biological Clock: track sleep
★3.7
Jet Lag Buster
Jet Lag Buster
★4.0
Twilight: Blue light filter
Twilight: Blue light filter
★4.6
Night Mode - Blue Light Filter
Night Mode - Blue Light Filter
★4.4
Twilight Pro Unlock
Twilight Pro Unlock
★4.9
World Clockr Lite
World Clockr Lite
★5.0
Sunrise Alarm Clock: Wake up n
Sunrise Alarm Clock: Wake up n
★4.0
Loss of the night
Loss of the night
★4.4
Smart Night Clock - Wallpaper
Smart Night Clock - Wallpaper
★3.9
Night Light / Desk Clock
Night Light / Desk Clock
★4.5
Brightest Flashlight & Fastest
Brightest Flashlight & Fastest
★4.5
LumiGuard: Blue Light Filter
LumiGuard: Blue Light Filter
★4.2