Once purchased the license would allow you to remove all ads within Camscanner app.

* Installed on over 400 million devices in over 200 countries and regions around the world
* CamScanner 50 Best Apps 2013 Edition – TIME
* Top Developer – Google Play Store
* The application employs its own image cropping and enhancing algorithm that leads to clearer images. – Makeuseof.com
* CamScanner may just be the best deal for scanning documents on your phone. – CNET.com

About CamScanner License: 
- Support high-quality scans
- PDF files are no longer created with scanned with Camscanner watermark 
- Upload to Evernote/SkyDrive feature will not expire
- No ads
- However Camscanner License is NOT equivalent to Camscanner Premium.