Customers can now search for apps in the App Store by entering designated keywords. Log in to iTunes Connect and proceed to the Overview section for each of your applications. You will find a keywords text field. Enter the appropriate keywords for your applications on iTunes Connect today to ensure your app appears when certain keywords are entered. When you assign your keywords you must separate your keywords by commas and you are limited to 100 characters.
Review your keywords carefully before submitting them as you will only be able to edit them in the following scenarios:
You are uploading a new binary for your application.
Your application has been rejected by Apple and is in the “Rejected” state in iTunes Connect.
You have rejected your own application and it is in the “Developer Rejected” state in iTunes Connect.
Visit the Manage your Applications section of the iTunes Connect FAQ for more details. Log in.