Removal of Quickoffice from Google Play and App Store

With the integration of Quickoffice into the Google Docs, Sheets and Slides apps, the Quickoffice app will be unpublished from Google Play and the App Store in the coming weeks. Existing users with the app can continue to use it, but no features will be added and new users will not be able to install the app.

Release track:
Rapid release and Scheduled release

Reference by : www.google.com