Is there a difference between the free plan and the paid plan?

Systematically, no there is no difference between the free plan and the paid plan. From the functionality stand point there is no difference between the 2. Although the 2 plans share the same functions, obviously the free plan only lasts 5 days while the paid plan will be a lot longer.

If you would like to use #Likes after the trial period, please purchase a paid plan. 

You can learn how to buy a plan from the URL provided below.