Scanner for Me app gives a user plenty of space for maneuver. For instance, you can add images from the device's Camera Roll.
There are two ways how you can do it:
1. When in the Scanner mode, tap the leftmost button in the lower menu bar and choose the image you want to add.
2. Likewise, open the Library (for this, tap the icon in the left top corner of the main screen), tap the Plus button and in the pop-up menu select Gallery.
Both these methods allow you to add images for their further manipulations in the app. Use the features of the app to the full extent! And please remember that shall you have any questions, we are always ready to help, just write us at firstname.lastname@example.org.