EU Law Would Direct Apple to Allow App Installations Outside Its Own Store

Apple Inc. is facing one of the biggest challenges yet to how it controls and profits from the App Store as Europe prepares to complete a new competition law in the coming weeks. The new European Union legislation — which could be effectively completed as soon as this month — is set to direct Apple to allow software to be downloaded outside its cash-generating App Store and limit how companies impose their own payment systems on apps, according to people involved in the negotiations.