Apple App Store, Google Play Store and Microsoft Windows Store are three options for free mobile phone downloads. They support the iOS, Android and Windows Phone platforms, respectively.
Users with iPhones can use the Apple App Store to download free applications to their phones. You can see whether or not an app is free by checking the download button on the individual page of an app. If there is a blue Get button on the right, the application is available for free. A free Apple ID is necessary to browse and download apps from the App Store.
Android users can get free apps from the Google Play Store. Similarly to the Apple App Store, it's possible to identify free apps by checking their download pages. If there is a green Install button below the name of the app, it's available for free. Users need a free Google account to access the Google Play Store.
Windows Phone users must use the Windows Store to download free apps to their phones. After opening the download page of an app, check the button on the bottom left to see whether or not it's free. If there is an Install button, the application is available for free. A free Microsoft account is required for access to downloads.