App Re-Skinning process is very simple, and it is all about to changing thegraphics,sounds and other Assets in an app (such as links) with new one to make a new app with similar features and functionalities. The idea of Re-Skinning of the app is extremely popular nowadays and people arepreferring Re-Skinning apps.There is huge demand of app Re-Skinning service because many people now want to tap into apps business which is highly profitable.
This is Very Similar as Purchasing a theme and Making Your Own Website on that theme. Moreover it is Legal and Permitted by Google and IOS to Upload to their Stores. You will See Numerous Apps almost same with Different Graphics on Playstores.

Developing an app is an Art. However Reskinning an App is Intelligence.

Developing an app from the start may be quite difficult and a lengthy processes, this need a whole processes of brainstorm. you may need to write down the idea and your thoughts, and throughout initial processes it may be more difficult due to reparation (i.e during setup the app in developing board). Also, the fact that you might be thinking about the marketing of the app when its fully developed. All the fear make you feel lazy and tired other then if you have any big idea.