IDM Scan is described as 'software for easy scanning of documents using the preset scan. Database scanned documents. Export to PDF and multipage Tiff'. There are three alternatives to IDM Scan for iPad, iPhone, Linux and Windows. The best alternative is Simple Scan, which is both free and Open Source. Other great apps like IDM Scan are Scan to PDF (Paid) and Windows Scan (Free).
If you have a scanner, this app makes it easy to scan documents and pictures and save them where you'd like. Whether you're scanning a photo from the flatbed or scanning multiple pages by using a document feeder, the Scan app is the perfect assistant.