The main reason Kodi isn’t available in Apple’s store is its addon support. Apple has long tried to create a “walled garden” for its users — that is, a store with strict regulations and checks on what is and is not accessible. Kodi, meanwhile, allows users to install any addon they like, thereby bypassing these limitations. Without removing this feature (which is arguably a cornerstone of the software), it’s unlikely a dedicated Kodi app for iOS will be arriving any time soon.