Yes there are other similar apps but often these features are in the premium paid versions…
Called Adobe Scan, the app can snap photos of paper documents and turn them into PDFs on your phone, no scanner required.
The app uses what Adobe calls “advanced image-processing technology” powered by Sensei, Adobe’s artificial-intelligence and machine-learning arm, to take a photo and turn it into a PDF.
Once your document is scanned, the app will turn the text on the page into searchable digital text. You can highlight, annotate, and edit it, and the document uploads to the Adobe Document Cloud so you can access it on a desktop as well. One thing to note, however, is that to edit or annotate the PDF on your phone, you’ll have to download the Adobe Acrobat app, which is also free.
See http://www.businessinsider.com/adobe-scan-free-app-pdf-scanner-2017-6#-/ 
Adobe just launched a free app that turns your phone into a document scanner
Thanks to Adobe’s new app, you’ll never need to…