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Challenger Comics Viewer

Description: Challenger Comics Viewer is a FREE (NO ADS) advanced comics, manga, books and PDF viewer. 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). It's FREE and THERE ARE NO ADS. This version works perfectly on phones AND tablets. Supported image file formats are JPG, PNG, GIF, WebP (Android 4.0+) and BMP. Supported book file formats are PDF, CBZ/ZIP, CBR/RAR, CBT/TAR, CB7/7Z, DjVu and ePUB. Main features are : • Automatic page loading • Zoom using multi-touch • Vertical/Horizontal scrolling • 2 display modes (Simple View which displays pages one by one and Multiple Image View which displays all pages one after the other) • Scale filters: Bilinear, Bicubic, Lanczos4 • Library with covers displayed to quickly open comics (multiple kind of views available) • Automatically switch to next issue when last page of the comic is displayed • Border cropping • Read from left to right or right to left • Actions can be customized • Single page and "2 page" display mode • Filter to improve displayed image quality • Manual scrolling by moving finger on screen • Autoscrolling by long pressing on screen • Tap to go to Next/Previous pages • Fit to Width/Height/Screen display • Multiple Image preview type • Option to direct access to page • History management • Support multi-language (for now, english, french, russian, italian) • Border can be display over Bitmap to easily identify each pages • Contrast/Brightness/Saturation management • Screen brightness management • Application can be moved to SD Card • Cached data can be stored in internal memory or SD Card • Supports Samsung "Multi-Window" mode • Color themes Files can be accessed on the device or network. Supported network protocols are : • Google Drive • OneDrive/SkyDrive • Mega • Ubooquity ( • DLNA/Upnp (Need Android >= 4.0.3) • OPDS (beta) • Windows/SAMBA/CIFS • DropBox • Webdav/Cloud (like,,, ...) • FTP • SFTP The application needs a phone/tablet with lots of memory and a powerful processor, so don't be disappointed if your phone is quite old and performance is not good. For instance, it works perfectly on Nexus 4, Nexus 7, Nexus 10, Galaxy S2, Galaxy S3, Galaxy S4, Galaxy S5, Galaxy S6, Galaxy S7, Galaxy Tab, ... Documentation is available at : An FAQ is available at : The English forum : Please add comments if you like this app or if you have some new features idea. To report bugs, don't hesitate to send me e-mail. Thanks !

Developer: The Challenger

Developer site:

Developer e-mail:

Developer adres: 11 Rue Simone de Beauvoir 44240 La Chapelle sur Erdre FRANCE

Version 2.1.28:
• Added support of DjVu file format
• Added Share cover action
• Added Collection cover management (using folder.jpg file or using Set collection cover action)
• Added button to send log file to developer by email (in Options => System => About => Send logs to developer)
• Added new library sort mode (display Last read first)
• Improved overall performances
• Improved Google Drive access
• Upgraded Dropbox API to v2
• Fixed minor bugs


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Simple & works. Simply the best comic viewer out there without too much unnecessary gimmicks. Best feature of it? Truly free without ads. The UI can be updated though, to match newer android style (just personal opinion, still use it regardless)

C. Coates

My favorite reader. If you're the type of person who likes to tweak every preference setting, Challenger will satisfy. I found the number of settings overwhelming at first, but the built-in help file covers the basics. Free, ad free, and even has advanced features like syncing a folder from Google Drive or a Samba share. The home screen icons are a bit dated, design wise, but that's honestly my only real complaint and the author's energy obviously is better directed into the app's functionality. Not quite as intuitive as ComicRack, but donation driven, no pop-ups or nagging, and similarly feature rich. Plus, it's still actively being developed, unlike ComicRack. Outclasses even other paid comic readers.

Gregory Cameron

After trying many similar apps, I eventually settled on this one. Honestly, I don't even remember why it was even a question. It does everything you could possibly want and it dies it well.

Daniel Waugh

Have used this for quite a while, alternating between it and 1 or 2 others. Easy to use & works well. Thanks Devs!

Tom Knox

Keeps downloading a remote file, even when I have a local file. There's just no way to, within the app to switch source without first downloading the whole file over and over. 2 gigs downloaded off wifi when abroad. Not cool.

Daniel Martinez

After trying out over a dozen comic readers, this might be the best one. The developer kindly helped fix an issue I had, after which I didn't have any problems.