Make private, hidden folders only visible to you in the Google Drive™. 
This app allows you to create secret folders. You can only access these folders. Any apps and mobile apps can not access to it. 
This app is a useful tool to protect and hide sensitive files on your Drive. This hidden folder can be used to store any types of files that you should hide. but Google™ Document Formats do not support.

Integrate your Google Drive™ with Hidden Folder. 
Provides connect with Google Drive™. You can directly use this app with your drive. Supports Chrome, IE10+, Firefox, Safari..