Apple recently today, sent to developers this new application which is a service that developers can use in iTunes Connect portal. analytics.itunes.apple.com access this link and you will be added to a list type, and chronologically when you have requested early access then you will receive an email for this access.
What you will have more with this new service?
With this new service we will:
1) See how often users visit this page of our app on the App Store.
2) See how many users open our application in time.
3) See the store of our application and the In-app purchase.
4) Create our advertising campaigns and see the success of our applications.
5) Understand which sites come largely from users who visit our app.