You can create apps for Android as well as iOS platforms. Both the platforms have the different build, so the procedure of creating an app is also different for both platforms. Here are the five steps that are to follow to create an app:
Register on the respective app stores
Generate Signing Keys
Upload Signing Keys on StoreHippo
Create Mobile App Build
Publish Mobile App on respective app stores
Building Mobile Apps for iOS
Building an Android App is the process of creating an app to making it available to the users by publishing it. You release your application through an application marketplace, such as Google Play store. When you publish your app on the Play store, you put your app in front of the immense active customers of the Android play store. For the complete procedure, refer Building an iOS App.
Building Mobile Apps for Android
Building an iOS App is the process of creating an iOS app to publish it that makes your IOS applications available to the users. You release your application through an application marketplace, such as an IOS App store. For the complete procedure, refer Building an Android App.