I see several of these applications, they can convert a camera picture into a PDF file. I'm looking for one for receipts for travel expenses. All of the apps in the Google Play store seem like they are written by people from eastern Europe, and all the free apps seem to have network access. Two big red flags. Why does a picture to pdf app need network access? And how does one know the app is not sending the PDFs or photos to some server in Russia or Eastern Europe?