Always on display photo clock is a super-amoled application that show all information like time, date and notification in a black screen wallpapers. This is the best smart watch application if you have Always on Display photo clock : Super-amoled installed you don’t need for smart watch.
Always on Display photo clock : Super-amoled always display live device time with date on mobile screen with amoled. you can Display picture clock on screen with full calendar clock.this application have edge clock and picture clock with stickers. The application also have a night clock view.
If you want to check time you don’t need to turn you device screen on if you have Always on Display photo clock : Super-amoled installed in your device. You just need to look at your mobile screen always on display clock will show you time.
Always on display clock is made possible thankfully by amoled. To save battery real time clock wallpaper stays your phone screen black except for a few pixels to show digital clock on screen. 
Always on Display photo clock : Super-amoled keep your mobile screen on all the time so that it can display digital clock on screen and emoji clock with notification, date and more without having touch the phone screen.
This amoled app will display analog clock with Date time battery & notification Information with your own picture, sticker & emoticons on your lock screen. 
User can use this application as live night clock app with your own pictures clock.
How to use:
1--- Open this app and start service by clicking on toogle button.
2--- Select clock type you want to show on your screen.
3---You can also select your picture clock.
4---Add memo text to always display on screen.
5---Easily change text and clock color.
6---Click apply….
FEATURES:

Display time and date information on black screen wallpaper.
Display battery level.
Display notification.
Notification enable and disable.
Analog and digital both clock supported.
Best collection of stylish and smart watch.

Change text color and style.
Change clock color.
Best clock design for both analog and digital.
Handle display during call.
Amazing music controller
Add memo text always display on screen.
Very easy to use.
All clock are free to download.