I have created an Android sticker application which is searchable in Android Gboard, with help of nice tutorial provided here and firebase app indexing.
My question here is how to achieve same for Gboard for IOS? I have not found any resource for this.
You can try "Magic Emoji" on iOS, Magic Emoji is the Gboard emoji kitchen for iOS & iMessage. AppStore search "Magic Emoji" and have a try. hope you like it.
app screenshot