This Microsoft app, which is also available as an Apple app, at the Apple App Store, has a LOT of other apps, doing the same thing, as this app referenced here.
For the iPhone and iPad users, looking at this and wanting to see what else is “out there” for them, you can look at the following article, although it does NOT show all the available apps for this, at the Apple App Store ...
Best document scanner apps for iPhone: Create, search, and send PDFs on the go!
http://www.imore.com/best-document-scanner-apps-iphone
In regards to the iPhone and iPad users, just searching through “AppZapp” (mentioned above) for PDF scanners, they list almost FIFTY APPS at the Apple App Store, doing that!