requestReview()
Tells StoreKit to ask the customer to rate or review your app, if appropriate.
Declaration
class func requestReview()Discussion
Although you normally call this method when it makes sense in the user experience flow of your app, App Store policy governs the actual display of a rating and review request view. Because this method may not present an alert, it isn’t appropriate to call requestReview() or requestReview(in:) in response to a button tap or other user action.
When you call this method in your shipping app and the system displays a rating and review request view, the system handles the entire process for you. In addition, you can continue to include a persistent link in the settings or configuration screens of your app that links to your App Store product page. To automatically open a page on which users can write a review in the App Store, append the query parameter action=write-review to your product URL.