Office Lens

Office Lens trims enhances and make pictures of whiteboards and documents readable. You can use Office Lens to convert images to PDF, Word and PowerPoint files, and save to OneNote,  One Drive, or your local device.  It is free of cost and free downloadable for android and ios platform .

Website

iOS: itunes.apple.com/us/app/office-lens/

Android: play.google.com/store/apps/