Apple's Great iOS Platform.
Now for Apple's iOS, this is also another really great platform out there. It offers all the features that Android offers, plus most of the applications in Google's Play Store are also in the app. store of iOS. Unlike the opponent, iOS is not open source. So only the Apple products (IPhone, IPad etc.) are powered by this platform. So it is quite costly to get a iOS powered device, as for the price of a IPhone 5 you can get like 2 Samsung Galaxy S3. So it is a very costly platform. Plus, most of the applications are paid applications on iOS. The official and only application store for iOS is Apple owner store known as "iTunes". All the applications for this platform can be found over iTunes. However, another disadvantage of iOS is that to even download a free application, you will need to attach a credit card to your iTunes account. It doesn't matters if you want to buy anything or not, credit card attachment is must. This is a big NO for a lot of people. In general, you can say that Apple is basically only targeting customers who spend much money on applications and cell phones in general. So iOS is quite costly platform.