Enlight Pixaloop - The animation app that lets you move still photos
Giphy - Search all the gifs and make your own animated gif
PixaMotion - Make live photos, live wallpapers, moving Backgrounds & themes with animation effects.
GIPHY Says - Turn your words into animated GIFs!
StoryZ - StoryZ Photo Motion and Video Maker is a photography app that allows you to create visual stories from still images.
Drop to GIF - Super simple movie to GIF conversion