Amazon.com account holders link their accounts to the Amazon Appstore app by signing into their accounts when prompted by the app. Customers can assign single sign-on addresses for specific apps by tapping Use a Different Account for This App on their smartphone's or tablet's Welcome screen.
After ensuring the Amazon Appstore app offers compatibility with specific smartphones or tablets, download the app directly from www.amazon.com/getandroidapp. Other download options include an email link sent directly from Amazon.com or a scan of the app's proprietary QR code. Then, tap the downloaded app for installation, open the app, and sign in with account information.
Amazon.com's other Android apps that support single sign-in include version 3.0 or higher of the Amazon Music app, version 4.3 or higher of the Amazon Kindle app, and version 7.0 or higher of the Amazon Appstore app. Customers also use single sign-on for the Amazon Underground and Cloud Drive apps.