Finally found an app that provides more functionality and ability to download the product. Similar apps include Showme app and Screenchomp. For details go to the developer’s website here.
Below is a video that introduce the app.
One of the featured movie in the developer’s website
… A teacher of animation and digital photography was asking me if I had any ideas for using Explain Everything with her class. I mentioned how students could use Explain Everything as a space to brainstorm, experiment with, and sequence ideas for stories …