The first thing that you need to do is to form a basic idea about your app. Next, list down the unique features in your application after the initial planning stage. Your Amazon clone app will be similar in some aspects to some of the apps that are already in the market. So, don't forget to make use the templates available in the market to save time and to go easy on your pocket. You will have greater freedom to integrate features of your choice if you choose to develop a custom backend for your application. Obtain feedback on the initial version of your app from the beta testers. This move will help you in the later stages after the deployment of your application.