i was wondering if there's something like this for android, or maybe someone can do it with xposed modules. That would be awesome!!! ... i guess... i think it would be amazing to visualize .GIF on our stock gallery, eventhough GIFFY makes .GIF animating in every app that can visualize images, well that's what i understood by reading the description of the tweak. Here's a link to the tweak for iphone, maybe this can be helpfull.
http://www.ijailbreak.com/cydia/giffy-cydia-tweak-ios/
http://www.ijailbreak.com/cydia/giffy-cydia-tweak-ios/