I enjoyed how Photo memories on iOS showed me new photos everyday. And I thought it would be a good idea to try set random wallpapers everyday. I tried setting this up with shortcuts and it worked. But it failed for automation. I soon realize that iOS has a lower memory limit for extension apps ( I think it was 16mb). What Shortcuts was doing in the background was loading the whole image in memory. Thus, I created RandWall to feed to shortcuts URL links instead a full image. Combined with Shortcuts automation - I get new wallpapers every couple of waking hours. Later on, I added reddit wallpapers based on beta testing feedback.