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Is iCloud Drive just limited to Mac? Is it accessible on Android or iOS?

iCloud Drive
Any kind of file. On all your devices.
Now you have the freedom to work with the document of your choice on the device of your choice. Because with iCloud Drive, you can safely store all your presentations, spreadsheets, PDFs, images, and any other kind of document in iCloud. Then access them from your iPhone, iPad, iPod touch, Mac, or PC. You get 5GB of iCloud storage free, and other storage plans start at $0.99 per month.

https://www.apple.com/icloud/icloud-drive/
 
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