Challenger Viewer Donation is an advanced comics, manga, books and PDF viewer. There is a FREE version available on Google Play Store. The Donation version is exactly the same (no extra features) and donation will help me to improve the app. It's really simple to use. You just have to scroll! Pages are automatically loaded and displayed (no need to click to go to next page).
The download of the app doesn't contain viruses or any kind of malware. The Challenger is the creator of Challenger Viewer Donation that can be found in the Comics category. Users rated the tool 4.7 on Google Play.