Microsoft currently doesn't have a universal app for its OneDrive cloud storage service on Windows 10 but such an app is in the works. Omar Shahine, Microsoft's Group Program Manager for OneDrive, has confirmed that the company is 'actively working' to release a universal app.
Shahine posted that comment in response to a question on the official OneDrive UserVoice feedback site. He didn't go into any further details, and did not offer a release date for the app. Another Microsoft team members, Douglas Pearce, posted on the same forum earlier this month that the OneDrive team is working to add support for pinning files and folders to the Windows 10 Mobile start screen.