Step 1: Verify the download started.

The download should then begin, and appear in your devices notification area:

Step 2: Open the Notification Tray.

Pull down your notification tray by sliding your finger down, starting at the top of your screen.  You will see the download:

Step 3: Touch the downloaded file to begin installation.

You will most likely receive a warning about the application being unsafe, because it did not come from an App Store, like Google Play or Amazon.  If you receive this warning, you will need to enable the option to install 3rd-party apps from unknown sources.  This setting varies by phone, but is always located in the phone's Settings menu, usually under Security or Applications:

Once you enable this setting, SpoofPro will install normally.

If you run into trouble, let us know!