By default, ScanDrop will scan your files and upload the scanned PDF files on Google Drive/Docs or Evernote. To be able to edit the files or scan them directly to TEXT, the Premium version is necessary since it automatically scans the documents and converts them to text so you can search through the scanned text.
Also, Adobe Fill & Sign DC is used to sign PDF forms, but that implies that the scanned files are created along with the forms and I don't think that ScanDrop will automatically create them. Better visit the official website to see what are the available and improved features offered by ScanDrop.