What are the differences between the trial version and the retail version?

A trail version converts videos with watermark (the logo of Product) on the screen and asks if you would like to purchase at each run while a retail version allows you to use freely without putting on watermark. As a customer , you will be reminded to update the software whenever a new version is released. The update is free of charge for lifetime. Besides, your emails will be attended at the first time, your advice and requirements will be much valued when we upgrade the software.