This popular app is free again.
MDScan is a mobile doc scanner that allows you to scan any type of document using your phone camera. This could be receipts, text pages, coupons, posters, magazine articles, invoices, pictures, and any printed documents.
How does it work?
1. Take a picture with your camera
2. Choose an editing option (you can select “unenhanced”)
3. Easily adjust the scan area using the 4 borders on the page
4. Confirm the scan to the set dimensions (ready presets available)
5. Choose filters to enhance the quality (optional)
6. Save and Export into a PDF or JPG
7. Share on Social Media, Email, Cloud Servers
I am using this app from almost a year. It is a really good app and does what it says.