Reading Progress is small WordPress plugin that creates a progress bar that indicates how much you've scrolled on a website.
Demo: https://codecanyon.net/item/reading-time-reading-progress-bar-for-wordpress/19773718
ReBar is a useful WordPress Plugin for improving User Experience during a blog post reading.
Demo: https://codecanyon.net/item/rebar-reading-progress-bar-for-wordpress-website/23941493
EBook is an Flutter Android / iOS application to read books online & offline. E-Book Android / iOS App has a user-friendly ui interface, easy to access.
Demo: https://codecanyon.net/item/flutter-ebook-app-online-ebook-reading-download-ebooksbooks-app/31219579