ALT CONNECT is an application for browsing files of Google Drive™. It has the features to list files in a tree, refer to file meta information, create a new folder and rename, move, copy, delete, trash files. You can upload files to Drive by sharing them with other file-browsing applications. The contents can be displayed on the phone by downloading the file from Drive and caching it. It can’t edit files directly on the Drive.

Important:
This app uses special scopes for Google Drive. By signing in Google, you authorize to use scopes on this app.

Please also refer to the homepage of the app for details.
https://www.malta-yamato.jp/en/alt-connect/