Ha I’m in a similar boat right now, have made a couple of working packs but there’s no way either apple or maybe some of the copyright holders / gif creators will be happy if I release to GenPop!
I was slightly concerned “the barrier to entry here is so low, the stickers are going to be a new Gold Rush on the App Store and a lot of low quality packs are out there already…
Watch here for the tutorials and see how easy it is below;
Messages allows your apps to create an expressive experience within a conversation. Get an overview of the iMessage App…developer.apple.com