I give you one star.. Why?? Why and Why?? Simply because of this,,,, yes your app and the books contained therein are superb and full of suspense which makes all your books a good read. But and only but which makes it a bore is,, i try to accumulate more and more bonus to open more chapters, but what do you do, i accumulate my bonus points then you take them away without a prior explanation. Does it warrant to give a kind hearted explanation. Thanks in advance.