Enjoy a new wallpaper every day! from the best source of photography: unsplash.com
Walpy does not rely on fixed-time alarms that prevent your device from getting enough sleep. It lets Android figure out when is the best time to change wallpapers. You can configure constraints to only change wallpaper while your device is:

✓ On a WI-FI network
✓ CHARGING
✓ IDLE

This allows you to enjoy a new wallpaper every day without hurting your device battery, data or performance, there are lots of wallpapers to choose from!

Wallpapers from Unsplash -> Check out their wallpapers on Unsplash.com