Try to find a slideshow app that just plays photos as a slideshow. The first 10 results are all the same app with different skins. You try to make a slideshow and after adding 10 photos it wants you to upgrade to a $10/month SUBSCRIPTION to MAKE SLIDESHOWS.

Only a problem because apple removed the ability to change your slideshow speed. Tried showing my fam a trip recently and it flies through at mach 5