When you purchase the PC version of n-Track through our website you get a set of registration codes that will enable you to unlock all the features of the Windows and Mac versions of n-Track. You'll be able to install n-Track on all your Windows and Mac desktop and laptop computers. The apps for iOS and Android phones and tablets are not included in the PC purchase. The iPad and Android versions of n-Track are distributed via the Apple App Store and Google Play store, and require separate purchases.