Kindle App For Android

So I know I post a lot of books for kindle but some people don't have kindles have at all.  It just like I don't have a android phone but other people do.  I recently found out that people and still buy books or get them for free and can now read them on their android power phones using the kindle reading app.  You will be able to access all your books while at the park.  So if you ever see a book you just have to read and don't have a kindle, you can still read it.