Note, once purchased, you can upgrade CamScanner Free version to CamScanner Full version, here.
Additionally, Amazon.com also has CamScanner License/Activation Code (Android App) on sale for $1.99. Thanks Thaineseguy
Editor's Notes & Price Research
Offer valid for a limited time only. CamScanner full version supports high-quality scan, PDF files created w/ no watermark, Evernote/SkyDrive uploading features will not expire, and no ads - Discombobulated
Last update was April 1, 2014, so maybe it'll still work when android N comes out but if it doesn't i wouldn't expect a speedy turn around to fix it.
====> I have the app regularly updated with the latest update just a week or so ago. The app itself (not the license) shows
July 28, 2016