This is available on the Apple app store. It is intended to organize your frequently read PDF files. It has a minimalistic user interface that is designed only for reading PDFs in a single page format. You can organize the PDFs in your library in any specific order or sort them alphabetically. You can swipe left or right to go to the next or previous page based on the chosen reading direction. To go to a specific page swipe down. When reading a PDF double tap to go back to the list of files. The app does not allow any user interactivity within the PDF using as zooming, selecting text, using links or adding annotations. For any concerns about the app, email carbide_keno_0o@icloud.com