I have web app to sell book and personalize content dynamic based on user input on every page of book (content is image and text).
Book have category and subcategory with child sub-category .
Build my book is main feature in app where user can change content dynamically.
All function already developing in cogentor (php and mysql).
First we need to do demo app first and then finalise complete work order .
We can pay for demo app if you give me early and demo will work for me as presentation.