Already on your iPhone
Scan paperwork into a PDF
A receipt, a form, a few pages. Start with Notes before downloading another scanner.
Start with Apple NotesFreeExplore Apple Notes 
Do this
- 1Open Notes and start a scan.
Create a note, tap the attachment control, then choose Scan Documents.
- 2Capture each page.
Check the edges and retake any page that is blurry or cut off.
- 3Save and share the PDF.
Review the finished scan before sending or saving it.