Currently the Offline Viewer is available for Windows and Mac computers only.
Challenger's online portal at www.challengercme.com does work on mobile devices. Practice, review, and assessment features, as well as guided remediation flow, adjust to fit any device you use online. There's no need for a separate "app!"
Just log into your Challenger account at http://challengercme.com/login. We recommend you clear your browser cache on your mobile device and reload http://challengercme.com/login to best experience this feature
If you have additional questions, please submit our support form or contact us by phone at 1-888-242-5536. We offer free, live, US-based support Mon – Fri, 8am – 5pm CT.