tKeepr

tKeepr is a great way to keep your Tumblr backed up onto your phone, or tablet. A simple enough app, just enter your Tumblr's name in the search bar, select the images that you want to save, and then click download! Simple as that! There are a few configuration options that you can change, you can choose to back up the last 100 images from your blog automatically, what quality the images saved should be and where to save them.