App Bundles
App Bundles are a publishing format for Android applications that allows developers to deliver optimized APKs to users based on their device configuration, such as screen density, CPU architecture, and language. It enables smaller app downloads by excluding unnecessary resources and code for each user's specific device. This format is used on the Google Play Store to improve app delivery efficiency and reduce storage usage on devices.
Developers should use App Bundles when publishing Android apps to the Google Play Store, as it is required for new apps since August 2021 and helps reduce app size by up to 20-30%, leading to faster downloads and better user experience. It is particularly beneficial for apps with multiple languages, screen densities, or CPU architectures, as it automatically generates tailored APKs for each device, eliminating the need for developers to manage multiple APK variants manually.