Third-party applications are getting popular day by day due to the wide availability of application and the features of this application.
Though iOS apps are popular among the user they have some limitations in its features. That is because many of the applications are not available in the App Store.
App Store will review the application and then it will approve them to be published on the store. If the application doesn’t go through policy for the App Store, then it will be not published in the Store.