SSAppUpdater is an open-source framework that compares the current version of the app with the store version and returns the essential details of it like app URL, new app version number, new release note, etc. So you can either redirect or notify the user to update their app.

Checks if there is a newer version of your app in the AppStore and alerts the user to update.

App Upgrade: Android iOS Demo App is a sample iOS app written in Swift integrated with App Upgrade SDK to demonstrate how Force upgrade works in iOS app with App Upgrade.