Free Online Photo Bank: Save Private Photos With This Free App (iOS & Android)

With Pinterest, you can now create secret boards. This means you can store any photo you want; while keeping it out of the public eye. I find this handy for storing screenshots, old photos and originals. This way, your photo album isn't unorganized and you have more storage available on your smartphone. 

Download Pinterest in the iOS App Store or Android Market. (FREE)

Create a new board and click the Secret tab before continuing. 

Now, you can choose to upload photos from your smartphone into this private board.