Do not buy it. It erases your carefully taken scans!
I was using this app a while ago. It worked fine, apparently. Today I scanned a document and saved the scans in a new album: the app asked me to join their cloud, I stayed no and the new album disappeared forever. I then rescanned again and saved into an existing album: this time the entire album disappeared forever! I kill and restarted the app, but my album was gone!!!
It from Bit about
Photo Scanner Plus, v3.3