Docr - Docr is a free app for the iPhone smartphones that lets its users scan all of their documents into sharp images and, in the end, store them as PDF files.
Google Lens - Discover information about something by taking a photo
Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.
Genius Scan - On The Go.
OpenScan - FOSS Document Scanner