Google’s new Play Store policy restricts apps from viewing the App list
Google will be rejecting apps in the Play Store to protect the other apps the users has installed. Apps have been using this information to profile users, and target them with ads, as well as selling this data to other comapnies. A user's list with installed apps can potentially tell the developer about the interest that a user has, and the type of services they have access to.
Google has announced to change its system on the Play Store from May 5, the policy says that the app developers will have to provide a solid reason why the tech giant should allow them to access other apps on users' smartphones. Apps that will fail to meet the policy requirements will be removed from the Play Store.