The big difference is that the platform is completely decoupled from app store. On Windows, publishers can choose to which store they would publish, and you ca

The big difference is that the platform is completely decoupled from app store. On Windows, publishers can choose to which store they would publish, and you can choose from where you want to buy it. On iOS you are completely at the mercy of Apple; not only won't they allow specific apps or content on the store, they seem to make exceptions for some apps/publishers. There is no way to install and use something that Apple doesn't like. Android is quite different, since it allows to load a different store, like the Amazon one, or FDroid for open source projects (you are still more or less tied to having Google Play Services on the device, since majority of Android apps use it, but the situation is a LOT better than on iOS.)