For my Kindle Fire HD, I have an app wanted to get also access to my Google Drive. This was the App Store the only available in Amazon's. The original is available for free in the Google Play Store with full functionality, but this store supports Amazon not (vice versa is already - with my Android phone I can both on the Store from Google as well as on the Amazon access - so buy Contact Apps only once). Optical sees this app like the original Google, but it lacks the contrary, the upload, the system of folders on the Google Drive and the download of the file name is not taken as one sees it on the Google Drive, but the Google advanced to a generic string. For 2.49 EUR costs the manufacturer of app should at least correct the latter and adjust the original Google App. Overall, this app also makes it clear that you have a Amazon Kindle Fire HD not 100% hydrogen Android Tablet and probably therefore also can not access the Google Play Store or intended. To load up files from Google Drive on his Kindle to further edit them there, this app is helpful but, so 3 stars.