I had been looking for this too. Amazon CloudDrive (Prime Photos) does a pretty good job (at least on iOS). Free for Prime members. My only complaint is that th

I had been looking for this too. Amazon CloudDrive (Prime Photos) does a pretty good job (at least on iOS). Free for Prime members. My only complaint is that the uploading choices are either automatically uploading all photos (which I don't want it doing) or selecting photos one by one. I would like an album level option to upload all photos in an album.