For the iPhone users here ...
Office Lens by Microsoft Corporation
https://appsto.re/us/d92k6.i
There is NOT an iPad version, and it is NOT a “Universal” app, but as iPad users know, they can still use iPhone (only) apps, although it is awkward!
I would have thought that Microsoft would have had enough sense to, at least, make it a “Universal” app — and therefore usable for both iPhone and iPad!
If this was an Apple app you liberal Apple buttboys would be posting 10 threads about it.
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