For new apps starting August 2021, AAB will replace the APK as the standard publishing format.Review Astro GO – Free for all Astro customers release date, changelog and more. Click on the APK file to initiate the installation process. If you downloaded the APK file on your computer, the process is slightly different. Apk Downloader, Mod Apk, Direct Link, Premium Apk, Pro Apk. Astro go apk 2021 Now, you access the downloaded file through any file manager.