@bentossell Thanks for the feature :) I made Fliptastic right after I made Animata!, an animated movie maker (http://www.animata.me). I saw there were a number of other slideshow apps on the App Store but they lacked the variety of special effects and transitions.
Fliptastic is built on top of a minified version of Animata!'s animation engine that I personally built.
Fliptastic started as an Instagram slideshow maker, but it has now matured as a pure slideshow maker itself, although you can still import photos from Instagram and turn them into a slideshow. Most users nowadays prefer to select photos from their camera roll instead.
What sets Fliptastic apart are the special effects and transitions that you won't see in other slideshow apps :)
Makerpad
Snapshelf