A free program for Android, by Oleg Sheremet.

Article Reader is an offline app for reading PDF files on your Android phone. It is the perfect tool for people who want to read a book or an article and want to do it without an internet connection. This app works perfectly on any Android phone, no matter if it is an old one or a new one.

You will be able to save the articles that you read in the app and you can read them later, even without the Internet connection. The best thing about this app is that you can customize the view and you can save the articles to your reading list so you can read them later, without the Internet connection.