I found that the interface and filters are really straightforward and useful however when I wanted to view a receipt it did not allow me to zoom into the image so unless I had a magnifying glass it was pointless. Also, the images do not appear to be stored in the camera roll so you cant access them there either, although at that point whats the reason to use the app. Fix this issue and youll get 4 stars.
KKevin01 about Receipt Catcher