Google Drive productivity app
Google Drive is Google's official virtual hard drive. It lets you store your files in the cloud and access them on every device. This way you can have your files anywhere you go with this android app.
You can upload or download any file, view its properties or edit it. Google Drive comes with a 5GB of free storage which you can use however you want. If you need more you have to pay a subscription fee.
Google Drive is integrated in all Google apps and products. This way you can import your files stored there in different apps or services from Google. It is a great way to backup and have your most important files accessible everywhere you go. You can access it on web and read more about Google Drive.