MVGEN - Make your own music videos with audio, gifs, and special effects
Trigraphy - Photo editing app that allows you to make mosaic/abstract looking art.
Photomosh - Turn anything into a vaporwave
Live GIF - Convert live photos to GIF
HearSeeParty - Combine Gifs with with music using tags
GIF Brewery by Gfycat - Create stunning GIFs from videos & screen recording for free