After on a Wattpad?

So, I love books.  As a mom I rarely get to read, but find occasions to get a few pages in here or there.  I've often thought about maybe jotting down a few words of my own when the kids are in school.  We've all got a story to tell, who knows, someone may want to read mine.  I've always pictured book writing either with your standard computer and even more old school a pen and paper.  In today's world however, I should have known that their is an app for that!